FreeBSD Errata Notice FreeBSD-EN-25:03.tzdata
29 January, 2025 by errata-notices@freebsd.org | freebsd
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-EN-25:03.tzdata Errata Notice The FreeBSD Project Topic: Timezone database information update Category: contrib Module: zoneinfo Announced: 2025-01-29 Affects: All supported versions of FreeBSD Corrected: 2025-01-20 00:25:35 UTC (stable/14, 14.2-STABLE) 2025-01-29 18:54:53 UTC (releng/14.2, 14.2-RELEASE-p1) 2025-01-29 18:55:24 UTC (releng/14.1, 14.1-RELEASE-p7) 2025-01-20 00:26:44 UTC (stable/13, 13.4-STABLE) 2025-01-29 18:55:26 UTC (releng/13.4, 13.4-RELEASE-p3) 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 via a binary patch: Systems running a RELEASE version of FreeBSD on the amd64 or arm64 platforms, or the i386 platform on FreeBSD 13, can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install Restart all the affected applications and daemons, or reboot the system. 2) 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. [FreeBSD 14.2] # fetch https://security.FreeBSD.org/patches/EN-25:03/tzdata-2025a.patch # fetch https://security.FreeBSD.org/patches/EN-25:03/tzdata-2025a.patch.asc # gpg --verify tzdata-2025a.patch.asc [FreeBSD 14.1, FreeBSD 13.4] # fetch https://security.FreeBSD.org/patches/EN-25:03/tzdata-2024b-2025a.patch # fetch https://security.FreeBSD.org/patches/EN-25:03/tzdata-2024b-2025a.patch.asc # gpg --verify tzdata-2024b-2025a.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /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/14/ a158d26e89f2 stable/14-n270163 releng/14.2/ b9149a3af722 releng/14.2-n269509 releng/14.1/ 40928c124157 releng/14.1-n267734 stable/13/ 2d6dcb4f97f8 stable/13-n259027 releng/13.4/ eb9d8bafa485 releng/13.4-n258271 - ------------------------------------------------------------------------- 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/2025a/NEWS> The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-25:03.tzdata.asc> -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEthUnfoEIffdcgYM7bljekB8AGu8FAmeajKUACgkQbljekB8A Gu9cFhAAuGVUEwz0fggS27AahJHjh1a7SCwCh0lqRqedqsyRwJ4hoMoU2D7u5MCa w6uhBGHP5WeaKhKjMuZy339qE1mDrlm07uaoAdoum1BcmbdPIbUBrnXVYyPXuaCo ao92VBXRjDYaPlWtiK2z8DUyzYorHyH8TPtI64T05AnbkgblZl7jzwK/QLljqo0X 33VhZF5ZGpHhdEr5lmx1Rx7dKfItgX7WGjnWFwQ7Y3J9pieCXggNjiHwjoXxz3Vz mZoRntnQ1JNTxEyPb69vokNCpOg03ateUTqGz/6JSR3quHqt78hXns4sVwYF9aSh A486DFzSHhW7Wl5moGSTl28GYFiU4mB7775Ui3wBEC2hI+UrH5etnmXjsr0kVOxE gmjLPwFcNqUZE+u3TmLTn7oRxftziwQ2qCWsfORyKfOP3fU0CrR41eOPWmNeCaVn rP5dmkYP857CcPjzDdt0UwI0ZSpirc304HxU9H4J69BBe2CLS4IC74SEr5hloZnY QNF66nyZ0dfU2Rf2ojwJ9FdHS9DyB5cnG7yMp6rn74ORrz7Gug2UO4UHVJwQ58Ji GWgZhENaGDbA8PO3X9ptoNAtmuYG4XFn4AxzqQ6cUfnveItVzRZr10qGE7WMhNjH /yVAV6swGSZWFdl05Km+75WHX/+7cQrGOgsWJt1yHkzRsYVS8K0=x7nl -----END PGP SIGNATURE-----