========================================================================== Ubuntu Security Notice USN-8219-1 April 28, 2026 ujson vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in UltraJSON. Software Description: - ujson: Ultra fast JSON encoder and decoder Details: Cameron Criswell discovered that UltraJSON contained a memory leak that would occur when parsing large integers. An attacker could possibly use this issue to cause UltraJSON to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-32874) It was discovered that UltraJSON contained integer overflow/underflow issues when calculating how much memory to reserve for indentation in certain instances. An attacker could possibly use this issue to cause UltraJSON to crash, resulting in a denial of service. (CVE-2026-32875) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS python3-ujson 5.11.0-3ubuntu0.1 Ubuntu 25.10 python3-ujson 5.10.0-1ubuntu0.1 Ubuntu 24.04 LTS python3-ujson 5.9.0-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS python3-ujson 5.1.0-1ubuntu0.1~esm2 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8219-1 CVE-2026-32874, CVE-2026-32875 Package Information: https://launchpad.net/ubuntu/+source/ujson/5.11.0-3ubuntu0.1 https://launchpad.net/ubuntu/+source/ujson/5.10.0-1ubuntu0.1
Tuesday, April 28, 2026
[USN-8185-2] Linux kernel (Low Latency NVIDIA) vulnerabilities
========================================================================== Ubuntu Security Notice USN-8185-2 April 28, 2026 linux-nvidia-lowlatency vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-nvidia-lowlatency: Linux low latency kernel for NVIDIA systems Details: Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcode causing loss of integrity and confidentiality. (CVE-2024-36347) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - MIPS architecture; - PowerPC architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Network block device driver; - Bluetooth drivers; - Character device driver; - TPM device driver; - Clock framework and drivers; - Data acquisition framework and drivers; - Hardware crypto device drivers; - GPU drivers; - Hardware monitoring drivers; - InfiniBand drivers; - Input Device core drivers; - IOMMU subsystem; - IRQ chip drivers; - Macintosh device drivers; - Multiple devices driver; - Media drivers; - Network drivers; - Mellanox network drivers; - STMicroelectronics network drivers; - Ethernet team driver; - MediaTek network drivers; - NVME drivers; - PA-RISC drivers; - Chrome hardware platform drivers; - x86 platform drivers; - Voltage and Current Regulator drivers; - SCSI subsystem; - SPI subsystem; - Media Oriented Systems Transport (MOST) driver; - Realtek RTL8723BS SDIO drivers; - TCM subsystem; - USB Host Controller drivers; - USB Type-C Connector System Software Interface driver; - Backlight driver; - Watchdog drivers; - BFS file system; - BTRFS file system; - Ext4 file system; - F2FS file system; - FUSE (File system in Userspace); - HFS+ file system; - File systems infrastructure; - Journaling layer for block devices (JBD2); - Network file system (NFS) client; - File system notification infrastructure; - NTFS3 file system; - OCFS2 file system; - SMB network file system; - BPF subsystem; - Ethernet bridge; - io_uring subsystem; - Locking primitives; - Scheduler infrastructure; - Shadow Call Stack mechanism; - Tracing infrastructure; - Memory management; - CAIF protocol; - Ceph Core library; - Networking core; - Ethtool driver; - Handshake API; - HSR network protocol; - IPv4 networking; - IPv6 networking; - MAC80211 subsystem; - Multipath TCP; - Netfilter; - NET/ROM layer; - NFC subsystem; - Open vSwitch; - Rose network layer; - Network traffic control; - Network sockets; - Sun RPC protocol; - Integrity Measurement Architecture(IMA) framework; - Key management; - Simplified Mandatory Access Control Kernel framework; - FireWire sound drivers; - HD-audio driver; - Turtle Beach Wavefront ALSA driver; - STMicroelectronics SoC drivers; - USB sound devices; - KVM subsystem; (CVE-2024-57795, CVE-2025-22022, CVE-2025-22111, CVE-2025-38022, CVE-2025-38234, CVE-2025-40164, CVE-2025-40325, CVE-2025-68206, CVE-2025-68254, CVE-2025-68255, CVE-2025-68256, CVE-2025-68257, CVE-2025-68258, CVE-2025-68259, CVE-2025-68261, CVE-2025-68263, CVE-2025-68264, CVE-2025-68265, CVE-2025-68266, CVE-2025-68291, CVE-2025-68325, CVE-2025-68332, CVE-2025-68335, CVE-2025-68336, CVE-2025-68337, CVE-2025-68344, CVE-2025-68345, CVE-2025-68346, CVE-2025-68347, CVE-2025-68349, CVE-2025-68354, CVE-2025-68362, CVE-2025-68363, CVE-2025-68364, CVE-2025-68366, CVE-2025-68367, CVE-2025-68369, CVE-2025-68371, CVE-2025-68372, CVE-2025-68374, CVE-2025-68378, CVE-2025-68379, CVE-2025-68380, CVE-2025-68724, CVE-2025-68727, CVE-2025-68728, CVE-2025-68732, CVE-2025-68733, CVE-2025-68740, CVE-2025-68741, CVE-2025-68742, CVE-2025-68744, CVE-2025-68753, CVE-2025-68755, CVE-2025-68756, CVE-2025-68757, CVE-2025-68758, CVE-2025-68759, CVE-2025-68763, CVE-2025-68764, CVE-2025-68765, CVE-2025-68766, CVE-2025-68767, CVE-2025-68769, CVE-2025-68770, CVE-2025-68771, CVE-2025-68772, CVE-2025-68773, CVE-2025-68774, CVE-2025-68775, CVE-2025-68776, CVE-2025-68777, CVE-2025-68778, CVE-2025-68780, CVE-2025-68782, CVE-2025-68783, CVE-2025-68785, CVE-2025-68786, CVE-2025-68787, CVE-2025-68788, CVE-2025-68794, CVE-2025-68795, CVE-2025-68796, CVE-2025-68797, CVE-2025-68798, CVE-2025-68799, CVE-2025-68800, CVE-2025-68801, CVE-2025-68804, CVE-2025-68806, CVE-2025-68808, CVE-2025-68809, CVE-2025-68810, CVE-2025-68811, CVE-2025-68813, CVE-2025-68814, CVE-2025-68815, CVE-2025-68816, CVE-2025-68817, CVE-2025-68818, CVE-2025-68819, CVE-2025-68820, CVE-2025-68821, CVE-2025-71064, CVE-2025-71065, CVE-2025-71066, CVE-2025-71067, CVE-2025-71068, CVE-2025-71069, CVE-2025-71071, CVE-2025-71072, CVE-2025-71075, CVE-2025-71077, CVE-2025-71078, CVE-2025-71079, CVE-2025-71081, CVE-2025-71082, CVE-2025-71083, CVE-2025-71084, CVE-2025-71085, CVE-2025-71086, CVE-2025-71087, CVE-2025-71088, CVE-2025-71089, CVE-2025-71091, CVE-2025-71093, CVE-2025-71094, CVE-2025-71095, CVE-2025-71096, CVE-2025-71097, CVE-2025-71098, CVE-2025-71101, CVE-2025-71102, CVE-2025-71104, CVE-2025-71105, CVE-2025-71107, CVE-2025-71108, CVE-2025-71109, CVE-2025-71111, CVE-2025-71112, CVE-2025-71113, CVE-2025-71114, CVE-2025-71116, CVE-2025-71118, CVE-2025-71119, CVE-2025-71120, CVE-2025-71121, CVE-2025-71122, CVE-2025-71123, CVE-2025-71125, CVE-2025-71126, CVE-2025-71127, CVE-2025-71130, CVE-2025-71131, CVE-2025-71132, CVE-2025-71133, CVE-2025-71135, CVE-2025-71136, CVE-2025-71137, CVE-2025-71138, CVE-2025-71140, CVE-2025-71141, CVE-2025-71143, CVE-2025-71144, CVE-2025-71147, CVE-2025-71148, CVE-2025-71149, CVE-2025-71150, CVE-2025-71151, CVE-2025-71153, CVE-2025-71154, CVE-2026-23209) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS linux-image-6.8.0-1051-nvidia-lowlatency 6.8.0-1051.54.1 linux-image-6.8.0-1051-nvidia-lowlatency-64k 6.8.0-1051.54.1 linux-image-nvidia-lowlatency 6.8.0-1051.54.1 linux-image-nvidia-lowlatency-6.8 6.8.0-1051.54.1 linux-image-nvidia-lowlatency-64k 6.8.0-1051.54.1 linux-image-nvidia-lowlatency-64k-6.8 6.8.0-1051.54.1 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-8185-2 https://ubuntu.com/security/notices/USN-8185-1 CVE-2024-36347, CVE-2024-57795, CVE-2025-22022, CVE-2025-22111, CVE-2025-38022, CVE-2025-38234, CVE-2025-40164, CVE-2025-40325, CVE-2025-68206, CVE-2025-68254, CVE-2025-68255, CVE-2025-68256, CVE-2025-68257, CVE-2025-68258, CVE-2025-68259, CVE-2025-68261, CVE-2025-68263, CVE-2025-68264, CVE-2025-68265, CVE-2025-68266, CVE-2025-68291, CVE-2025-68325, CVE-2025-68332, CVE-2025-68335, CVE-2025-68336, CVE-2025-68337, CVE-2025-68344, CVE-2025-68345, CVE-2025-68346, CVE-2025-68347, CVE-2025-68349, CVE-2025-68354, CVE-2025-68362, CVE-2025-68363, CVE-2025-68364, CVE-2025-68366, CVE-2025-68367, CVE-2025-68369, CVE-2025-68371, CVE-2025-68372, CVE-2025-68374, CVE-2025-68378, CVE-2025-68379, CVE-2025-68380, CVE-2025-68724, CVE-2025-68727, CVE-2025-68728, CVE-2025-68732, CVE-2025-68733, CVE-2025-68740, CVE-2025-68741, CVE-2025-68742, CVE-2025-68744, CVE-2025-68753, CVE-2025-68755, CVE-2025-68756, CVE-2025-68757, CVE-2025-68758, CVE-2025-68759, CVE-2025-68763, CVE-2025-68764, CVE-2025-68765, CVE-2025-68766, CVE-2025-68767, CVE-2025-68769, CVE-2025-68770, CVE-2025-68771, CVE-2025-68772, CVE-2025-68773, CVE-2025-68774, CVE-2025-68775, CVE-2025-68776, CVE-2025-68777, CVE-2025-68778, CVE-2025-68780, CVE-2025-68782, CVE-2025-68783, CVE-2025-68785, CVE-2025-68786, CVE-2025-68787, CVE-2025-68788, CVE-2025-68794, CVE-2025-68795, CVE-2025-68796, CVE-2025-68797, CVE-2025-68798, CVE-2025-68799, CVE-2025-68800, CVE-2025-68801, CVE-2025-68804, CVE-2025-68806, CVE-2025-68808, CVE-2025-68809, CVE-2025-68810, CVE-2025-68811, CVE-2025-68813, CVE-2025-68814, CVE-2025-68815, CVE-2025-68816, CVE-2025-68817, CVE-2025-68818, CVE-2025-68819, CVE-2025-68820, CVE-2025-68821, CVE-2025-71064, CVE-2025-71065, CVE-2025-71066, CVE-2025-71067, CVE-2025-71068, CVE-2025-71069, CVE-2025-71071, CVE-2025-71072, CVE-2025-71075, CVE-2025-71077, CVE-2025-71078, CVE-2025-71079, CVE-2025-71081, CVE-2025-71082, CVE-2025-71083, CVE-2025-71084, CVE-2025-71085, CVE-2025-71086, CVE-2025-71087, CVE-2025-71088, CVE-2025-71089, CVE-2025-71091, CVE-2025-71093, CVE-2025-71094, CVE-2025-71095, CVE-2025-71096, CVE-2025-71097, CVE-2025-71098, CVE-2025-71101, CVE-2025-71102, CVE-2025-71104, CVE-2025-71105, CVE-2025-71107, CVE-2025-71108, CVE-2025-71109, CVE-2025-71111, CVE-2025-71112, CVE-2025-71113, CVE-2025-71114, CVE-2025-71116, CVE-2025-71118, CVE-2025-71119, CVE-2025-71120, CVE-2025-71121, CVE-2025-71122, CVE-2025-71123, CVE-2025-71125, CVE-2025-71126, CVE-2025-71127, CVE-2025-71130, CVE-2025-71131, CVE-2025-71132, CVE-2025-71133, CVE-2025-71135, CVE-2025-71136, CVE-2025-71137, CVE-2025-71138, CVE-2025-71140, CVE-2025-71141, CVE-2025-71143, CVE-2025-71144, CVE-2025-71147, CVE-2025-71148, CVE-2025-71149, CVE-2025-71150, CVE-2025-71151, CVE-2025-71153, CVE-2025-71154, CVE-2026-23209 Package Information: https://launchpad.net/ubuntu/+source/linux-nvidia-lowlatency/6.8.0-1051.54.1
[USN-8199-1] OpenStack Glance vulnerabilities
========================================================================== Ubuntu Security Notice USN-8199-1 April 22, 2026 glance vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in OpenStack Glance. Software Description: - glance: OpenStack Image Registry and Delivery Service Details: Martin Kaesberger discovered that OpenStack Glance's image processing could return the contents of arbitrary files. An attacker could possibly use this issue to exfiltrate sensitive data. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-32498) Hyeongeun Ji and Abhishek Kekane discovered several server-side request forgery vulnerabilities in OpenStack Glance's image import. An attacker could possibly use this issue to bypass URL validation checks and redirect to internal services. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-34881) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS glance 2:20.2.0-0ubuntu1.2+esm2 Available with Ubuntu Pro glance-api 2:20.2.0-0ubuntu1.2+esm2 Available with Ubuntu Pro glance-common 2:20.2.0-0ubuntu1.2+esm2 Available with Ubuntu Pro python3-glance 2:20.2.0-0ubuntu1.2+esm2 Available with Ubuntu Pro Ubuntu 18.04 LTS glance 2:16.0.1-0ubuntu1.1+esm2 Available with Ubuntu Pro glance-api 2:16.0.1-0ubuntu1.1+esm2 Available with Ubuntu Pro glance-common 2:16.0.1-0ubuntu1.1+esm2 Available with Ubuntu Pro glance-registry 2:16.0.1-0ubuntu1.1+esm2 Available with Ubuntu Pro python-glance 2:16.0.1-0ubuntu1.1+esm2 Available with Ubuntu Pro Ubuntu 16.04 LTS glance 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro glance-api 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro glance-common 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro glance-glare 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro glance-registry 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro python-glance 2:12.0.0-0ubuntu2+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8199-1 CVE-2024-32498, CVE-2026-34881
[USN-8210-1] nginx vulnerabilities
========================================================================== Ubuntu Security Notice USN-8210-1 April 27, 2026 nginx vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in nginx. Software Description: - nginx: small, powerful, scalable web/proxy server Details: It was discovered that the nginx ngx_mail_auth_http_module module incorrectly handled certain requests. An attacker could possibly use this issue to cause nginx to crash, resulting in a denial of service. (CVE-2026-27651) It was discovered that the nginx ngx_http_dav_module module incorrectly handled certain destination URIs. An attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly modify source or destination names outside of the document root. (CVE-2026-27654) It was discovered that the nginx ngx_http_mp4_module module incorrectly handled certain MP4 files. An attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-27784, CVE-2026-32647) It was discovered that the nginx ngx_mail_smtp_module module incorrectly handled certain CRLF sequences. An attacker could possibly use this issue to inject arbitrary SMTP headers. (CVE-2026-28753) It was discovered that the nginx ngx_stream_ssl_module module incorrectly handled revoked certificates. This could result in successful TLS handshakes even after an OCSP check identifies a certificate as revoked, contrary to expectations. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-28755) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 nginx 1.28.0-6ubuntu1.2 nginx-core 1.28.0-6ubuntu1.2 nginx-extras 1.28.0-6ubuntu1.2 nginx-full 1.28.0-6ubuntu1.2 nginx-light 1.28.0-6ubuntu1.2 Ubuntu 24.04 LTS nginx 1.24.0-2ubuntu7.7 nginx-core 1.24.0-2ubuntu7.7 nginx-extras 1.24.0-2ubuntu7.7 nginx-full 1.24.0-2ubuntu7.7 nginx-light 1.24.0-2ubuntu7.7 Ubuntu 22.04 LTS nginx 1.18.0-6ubuntu14.10 nginx-core 1.18.0-6ubuntu14.10 nginx-extras 1.18.0-6ubuntu14.10 nginx-full 1.18.0-6ubuntu14.10 nginx-light 1.18.0-6ubuntu14.10 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8210-1 CVE-2026-27651, CVE-2026-27654, CVE-2026-27784, CVE-2026-28753, CVE-2026-28755, CVE-2026-32647 Package Information: https://launchpad.net/ubuntu/+source/nginx/1.28.0-6ubuntu1.2 https://launchpad.net/ubuntu/+source/nginx/1.24.0-2ubuntu7.7 https://launchpad.net/ubuntu/+source/nginx/1.18.0-6ubuntu14.10
Fedora Linux 44 Final is a GO
The Fedora Linux 44 Final RC-1.7 compose is GO and will be shipped live on Tuesday, 28 April 2026. For more information please check the Go/No-Go meeting minutes[1] or log[2] and our schedule[3]. [1] https://meetbot.fedoraproject.org/meeting_matrix_fedoraproject-org/2026-04-23/f44-final-go-no-go-meeting-2.2026-04-23-18.00.html [2] https://meetbot.fedoraproject.org/meeting_matrix_fedoraproject-org/2026-04-23/f44-final-go-no-go-meeting-2.2026-04-23-18.00.log.html [3] https://fedorapeople.org/groups/schedule/f-44/f-44-key-tasks.html -jef -- _______________________________________________ devel-announce mailing list -- devel-announce@lists.fedoraproject.org To unsubscribe send an email to devel-announce-leave@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel-announce@lists.fedoraproject.org Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new
Fedora Linux 44 is now officially available!
Hello everyone, We’re excited to announce that Fedora Linux 44 is now officially available! This release continues Fedora’s tradition of delivering the latest open-source innovations, bringing together updated packages, improved performance, and enhancements across the desktop, server, and cloud ecosystems. Whether you’re a developer, system administrator, or open-source enthusiast, Fedora Linux 44 offers a refined and reliable experience built on cutting-edge technology. To get started: - Read the official announcement and release highlights: https://fedoramagazine.org/announcing-fedora-linux-44/ - For a fresh installation, download the installer images from: https://fedoraproject.org/ - If you encounter any issues or have questions, visit: https://ask.fedoraproject.org/ - Upgrade your existing Fedora system using the standard upgrade process: https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/ Thanks to all contributors who made this release possible. Regards, Samyak Jain Fedora Project -- _______________________________________________ announce mailing list -- announce@lists.fedoraproject.org To unsubscribe send an email to announce-leave@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/announce@lists.fedoraproject.org Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new
[USN-8190-2] Rack::Session vulnerability
========================================================================== Ubuntu Security Notice USN-8190-2 April 28, 2026 ruby-rack-session vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS Summary: Rack::Session could allow unintended access to network services. Software Description: - ruby-rack-session: Session management implementation for Rack Details: USN-8190-1 fixed a vulnerability in Rack::Session. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to manipulate session contents and possibly gain unauthorized access. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS ruby-rack-session 2.1.1-0.1ubuntu0.26.04.1 After a standard system update you need to restart ruby-rack-session to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8190-2 https://ubuntu.com/security/notices/USN-8190-1 CVE-2026-39324 Package Information: https://launchpad.net/ubuntu/+source/ruby-rack-session/2.1.1-0.1ubuntu0.26.04.1
[USN-8136-2] Dovecot regression
========================================================================== Ubuntu Security Notice USN-8136-2 April 28, 2026 dovecot regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: USN-8136-1 introduced a regression in Dovecot Software Description: - dovecot: IMAP and POP3 email server Details: USN-8136-1 fixed vulnerabilities in Dovecot. The update caused a regression on Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Dovecot incorrectly handled invalid base64 SASL data. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10. (CVE-2025-59028) It was discovered that Dovecot script decode2text.sh incorrectly handled zip files. An attacker could possibly use this issue to obtain sensitive information. (CVE-2025-59031) It was discovered that Dovecot incorrectly handled certain AUTHENTICATE requests. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-59032) It was discovered that Dovecot incorrectly handled certain SQL based authentication. An attacker could possibly use this issue to bypass authentication. This issue only affected Ubuntu 25.10. (CVE-2026-24031) It was discovered that Dovecot incorrectly handled certain LDAP based authentication. An attacker could possibly use this issue to bypass restrictions and allow probing of LDAP structure. This issue only affected Ubuntu 25.10. (CVE-2026-27860) It was discovered that Dovecot is vulnerable to replay attack under certain conditions. An attacker could possibly use this issue to bypass authentication. (CVE-2026-27855) It was discovered that Dovecot is vulnerable to a timing attack under certain conditions. An attacker could possibly use this issue to bypass authentication. (CVE-2026-27856) It was discovered that Dovecot incorrectly handled certain IMAP login requests. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-27857) It was discovered that Dovecot incorrectly handled certain specially crafted messages. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-27858) It was discovered that Dovecot incorrectly handled certain specially crafted mail messages. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-27859) It was discovered that Dovecot incorrectly handles file paths. A attacker could possibly use this issue to perform a path traversal and obtain or modify arbitrary files. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-0394) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS dovecot-core 1:2.3.21+dfsg1-2ubuntu6.4 Ubuntu 22.04 LTS dovecot-core 1:2.3.16+dfsg1-3ubuntu2.8 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8136-2 https://ubuntu.com/security/notices/USN-8136-1 CVE-2026-0394, https://launchpad.net/bugs/2150116 Package Information: https://launchpad.net/ubuntu/+source/dovecot/1:2.3.21+dfsg1-2ubuntu6.4 https://launchpad.net/ubuntu/+source/dovecot/1:2.3.16+dfsg1-3ubuntu2.8
[USN-8202-2] jq vulnerabilities
========================================================================== Ubuntu Security Notice USN-8202-2 April 28, 2026 jq vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: Summary: Several security issues were fixed in jq. Software Description: Details: USN-8202-1 fixed vulnerabilities in jq. This update provides the corresponding update to Ubuntu 26.04 LTS. Original advisory details: It was discovered that jq did not correctly handle certain string concatenations. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-32316) It was discovered that jq did not correctly handle recursion in certain circumstances. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-33947) It was discovered that jq did not correctly handle improperly terminated strings. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-33948) It was discovered that jq did not correctly handle checking certain variable types. An attacker could possibly use this issue to cause a denial of service or leak sensitive information. (CVE-2026-39956) It was discovered that jq did not correctly handle certain string formatting. An attacker could possibly use this issue to leak sensitive information or cause a denial of service. (CVE-2026-39979) It was discovered that jq used a fixed seed for hash table operations. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-40164) Update instructions: The problem can be corrected by updating your system to the following package versions: In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8202-2 https://ubuntu.com/security/notices/USN-8202-1 CVE-2026-32316, CVE-2026-33947, CVE-2026-33948, CVE-2026-39956, CVE-2026-39979, CVE-2026-40164
[USN-8213-1] Vim vulnerabilities
========================================================================== Ubuntu Security Notice USN-8213-1 April 27, 2026 vim vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Vim. Software Description: - vim: Vi IMproved - enhanced vi editor Details: Michał Majchrowicz discovered that Vim's zip plugin could overwrite arbitrary files. An attacker could possibly use this issue to delete sensitive data or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-35177) It was discovered that Vim's netbeans interface did not properly sanitize certain strings. An attacker could possibly use this issue to execute arbitrary commands. (CVE-2026-39881) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 vim 2:9.1.0967-1ubuntu6.3 vim-athena 2:9.1.0967-1ubuntu6.3 vim-common 2:9.1.0967-1ubuntu6.3 vim-gtk3 2:9.1.0967-1ubuntu6.3 vim-gui-common 2:9.1.0967-1ubuntu6.3 vim-motif 2:9.1.0967-1ubuntu6.3 vim-nox 2:9.1.0967-1ubuntu6.3 vim-runtime 2:9.1.0967-1ubuntu6.3 vim-tiny 2:9.1.0967-1ubuntu6.3 Ubuntu 24.04 LTS vim 2:9.1.0016-1ubuntu7.12 vim-athena 2:9.1.0016-1ubuntu7.12 vim-common 2:9.1.0016-1ubuntu7.12 vim-gtk3 2:9.1.0016-1ubuntu7.12 vim-gui-common 2:9.1.0016-1ubuntu7.12 vim-motif 2:9.1.0016-1ubuntu7.12 vim-nox 2:9.1.0016-1ubuntu7.12 vim-runtime 2:9.1.0016-1ubuntu7.12 vim-tiny 2:9.1.0016-1ubuntu7.12 Ubuntu 22.04 LTS vim 2:8.2.3995-1ubuntu2.28 vim-athena 2:8.2.3995-1ubuntu2.28 vim-common 2:8.2.3995-1ubuntu2.28 vim-gtk 2:8.2.3995-1ubuntu2.28 vim-gtk3 2:8.2.3995-1ubuntu2.28 vim-gui-common 2:8.2.3995-1ubuntu2.28 vim-nox 2:8.2.3995-1ubuntu2.28 vim-runtime 2:8.2.3995-1ubuntu2.28 vim-tiny 2:8.2.3995-1ubuntu2.28 Ubuntu 20.04 LTS vim 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-athena 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-common 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-gtk 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-gtk3 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-gui-common 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-nox 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-runtime 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro vim-tiny 2:8.1.2269-1ubuntu5.32+esm4 Available with Ubuntu Pro Ubuntu 18.04 LTS vim 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-athena 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-common 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-gnome 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-gtk 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-gtk3 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-gui-common 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-nox 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-runtime 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro vim-tiny 2:8.0.1453-1ubuntu1.13+esm16 Available with Ubuntu Pro Ubuntu 16.04 LTS vim 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-athena 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-athena-py2 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-common 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gnome 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gnome-py2 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gtk 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gtk-py2 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gtk3 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gtk3-py2 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-gui-common 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-nox 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-nox-py2 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-runtime 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro vim-tiny 2:7.4.1689-3ubuntu1.5+esm31 Available with Ubuntu Pro Ubuntu 14.04 LTS vim 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-athena 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-common 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-gnome 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-gtk 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-gui-common 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-lesstif 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-nox 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-runtime 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro vim-tiny 2:7.4.052-1ubuntu3.1+esm25 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8213-1 CVE-2026-35177, CVE-2026-39881 Package Information: https://launchpad.net/ubuntu/+source/vim/2:9.1.0967-1ubuntu6.3 https://launchpad.net/ubuntu/+source/vim/2:9.1.0016-1ubuntu7.12 https://launchpad.net/ubuntu/+source/vim/2:8.2.3995-1ubuntu2.28
[USN-8214-1] NLTK vulnerability
========================================================================== Ubuntu Security Notice USN-8214-1 April 28, 2026 nltk vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: NLTK could be made to crash or run programs as your login if it opened a specially crafted zip file. Software Description: - nltk: Natural Language Toolkit Details: It was discovered that NLTK incorrectly handled file extraction when opening a maliciously crafted zip file. An attacker could possibly use this issue to create or overwrite files on the system and execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS python3-nltk 3.8.1-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS python3-nltk 3.7-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS python3-nltk 3.4.5-2ubuntu0.1~esm3 Available with Ubuntu Pro Ubuntu 18.04 LTS python-nltk 3.2.5-1ubuntu0.1+esm3 Available with Ubuntu Pro python3-nltk 3.2.5-1ubuntu0.1+esm3 Available with Ubuntu Pro Ubuntu 16.04 LTS python-nltk 3.1-1ubuntu0.1+esm3 Available with Ubuntu Pro python3-nltk 3.1-1ubuntu0.1+esm3 Available with Ubuntu Pro Ubuntu 14.04 LTS python-nltk 2.0~b9-0ubuntu4.1~esm5 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8214-1 CVE-2025-14009
Monday, April 27, 2026
[USN-8212-1] authd vulnerability
========================================================================== Ubuntu Security Notice USN-8212-1 April 27, 2026 authd vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: Summary: authd could be made to escalate privileges. Software Description: Details: It was discovered that authd incorrectly assigned the primary group ID to users under certain conditions. A local attacker could possibly use this issue to achieve privilege escalation, or gain unauthorized access to files belonging to other users. Update instructions: The problem can be corrected by updating your system to the following package versions: After a standard system update you need to restart authd to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8212-1 CVE-2026-6970