[USN-8248-1] NASM vulnerabilities

========================================================================== Ubuntu Security Notice USN-8248-1 May 07, 2026 nasm vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in NASM. Software Description: - nasm: Netwide Assembler Details: Daisy Chen discovered that NASM was vulnerable to a heap buffer overflow when handling certain input. An attacker could possibly use this issue to cause NASM to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-31722) It was discovered that NASM incorrectly handled memory allocation. An attacker could possibly use this issue to cause NASM to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2021-33452, CVE-2021-33450) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS nasm 2.16.01-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS nasm 2.15.05-1ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8248-1 CVE-2021-33450, CVE-2021-33452, CVE-2023-31722