-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-EN-26:18.tzdata Errata Notice The FreeBSD Project Topic: Timezone database information update Category: contrib Module: zoneinfo Announced: 2026-07-29 Affects: All supported versions of FreeBSD. Corrected: 2026-07-11 09:48:44 UTC (stable/15, 15.1-STABLE) 2026-07-29 17:50:24 UTC (releng/15.1, 15.1-RELEASE-p2) 2026-07-29 17:50:00 UTC (releng/15.0, 15.0-RELEASE-p12) 2026-07-11 09:52:47 UTC (stable/14, 14.4-STABLE) 2026-07-29 17:49:33 UTC (releng/14.4, 14.4-RELEASE-p8) For general information regarding FreeBSD Errata Notices and Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>. I. Background The IANA Time Zone Database (often called tz or zoneinfo) contains code and data that represent the history of local time for many representative locations around the globe. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight-saving rules. FreeBSD releases install the IANA Time Zone Database in /usr/share/zoneinfo. The tzsetup(8) utility allows the user to specify the default local time zone. Based on the selected time zone, tzsetup(8) copies one of the files from /usr/share/zoneinfo to /etc/localtime. A time zone may also be selected for an individual process by setting its TZ environment variable to a desired time zone name. II. Problem Description Several changes to future and past timestamps have been recorded in the IANA Time Zone Database after previous FreeBSD releases were released. This affects many users in different parts of the world. Because of these changes, the data in the zoneinfo files need to be updated. If the local timezone on the running system is affected, tzsetup(8) needs to be run to update /etc/localtime. III. Impact An incorrect time will be displayed on a system configured to use one of the affected time zones if the /usr/share/zoneinfo and /etc/localtime files are not updated, and all applications on the system that rely on the system time, such as cron(8) and syslog(8), will be affected. IV. Workaround The system administrator can install an updated version of the IANA Time Zone Database from the misc/zoneinfo port and run tzsetup(8). Applications that store and display times in Coordinated Universal Time (UTC) are not affected. V. Solution Upgrade your system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. Please note that some third party software, for instance PHP, Ruby, Java, Perl and Python, may be using different zoneinfo data sources, in such cases this software must be updated separately. Software packages that are installed via binary packages can be upgraded by executing 'pkg upgrade'. Following the instructions in this Errata Notice will only update the IANA Time Zone Database installed in /usr/share/zoneinfo. Perform one of the following: 1) To update your system installed from base system packages: Systems running a 15.0-RELEASE or later version of FreeBSD on the amd64 or arm64 platforms, which were installed using base system packages, can be updated via the pkg(8) utility: # pkg upgrade -r FreeBSD-base 2) To update your system installed from binary distribution sets: Systems running a RELEASE version of FreeBSD on the amd64 or arm64 platforms which were not installed using base system packages can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install 3) To update your system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch https://security.FreeBSD.org/patches/EN-26:18/tzdata-2026c.patch # fetch https://security.FreeBSD.org/patches/EN-26:18/tzdata-2026c.patch.asc # gpg --verify tzdata-2026c.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch -E -p0 < /path/to/patch c) Recompile the operating system using buildworld and installworld as described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>. Restart all the affected applications and daemons, or reboot the system. VI. Correction details This issue is corrected as of the corresponding Git commit hash in the following stable and release branches: Branch/path Hash Revision - ------------------------------------------------------------------------- stable/15/ 6470095eaa17 stable/15-n284437 releng/15.1/ 3be83b93661d releng/15.1-n283583 releng/15.0/ 8dd31fbcc50f releng/15.0-n281087 stable/14/ 819af80de8e8 stable/14-n274491 releng/14.4/ 7a227adc1ac6 releng/14.4-n273748 - ------------------------------------------------------------------------- Run the following command to see which files were modified by a particular commit: # git show --stat <commit hash> Or visit the following URL, replacing NNNNNN with the hash: <URL:https://cgit.freebsd.org/src/commit/?id=NNNNNN> To determine the commit count in a working tree (for comparison against nNNNNNN in the table above), run: # git rev-list --count --first-parent HEAD VII. References <URL:https://github.com/eggert/tz/blob/2026c/NEWS> The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-26:18.tzdata.asc> -----BEGIN PGP SIGNATURE----- iQJPBAEBCgA5FiEEthUnfoEIffdcgYM7bljekB8AGu8FAmpqbjsbFIAAAAAABAAO bWFudTIsMi41KzEuMTIsMCwzAAoJEG5Y3pAfABrvWjEP/3AD86hhb4UDbCjoPCWg X/lkCToUk9WXaEQqORQIFOxsUu2e4CHDWlFkUvAezEV4zzoLjh/KmUzxXpgjj4Ij VF1pKgRBPMFQwtdrC9o106yoLAXJFGLlb1EG3jXUOHpOgMTtqCnYejp2NI0uXdDS BL19NOZUq8uyW1bbQF1XRQHo9nvUA0fhNbRHLmvXvAQFHsWDbz1h/PvwiSNNZlHs vOe9rqSqfOleTsj20V27kRC1/8C/0Ws29hVFWH1Zqb1x63f0nErfYAs/g9tJMdIl n4zuxQyJueX+GJaolBHEKvNkGBf/nSRtJNSJydD5MWbzBHs+mt3oiKfqbfUCUiR/ leyvYhYTczfiORT+GSuBzMEn2fnrP+i/7VyqmETgnEymkyDu6UyxWJIA/d57ajGv M0GF62DYWtzjVHDvCChTPAAs4XNN26E/h8eATCNMNoLn39sQQFBjTo+36e4j7RnN bQZc7wAwPONOyxjs8GPC7ix8Ytja5VbwIqpUw7P8NpG4RIE3mIOIHAkympT0U7rn 2xaU102yF3FlS3mUVO9KQyP0RrMhrY06av+MdkZqBcRLbX5CYw+AFcx4A2gU53vH a5FPKgyJxcL9/TjrjfvXvRfPJ8xb2E2apqtL/Ih1Dx22XDqv0hQj8Rhrqj2ViY+w BAQi1nCtevTlSbKBKMaCx/R0 =5Yms -----END PGP SIGNATURE-----
No comments:
Post a Comment