-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-EN-22:20.tzdata Errata Notice The FreeBSD Project Topic: Timezone database information update Category: contrib Module: zoneinfo Announced: 2022-08-30 Affects: All supported versions of FreeBSD. Corrected: 2022-08-17 01:48:01 UTC (stable/13, 13.1-STABLE) 2022-08-30 23:02:48 UTC (releng/13.1, 13.1-RELEASE-p2) 2022-08-30 23:01:22 UTC (releng/13.0, 13.0-RELEASE-p13) 2022-08-17 01:56:52 UTC (stable/12, 12.3-STABLE) 2022-08-30 23:16:54 UTC (releng/12.3, 12.3-RELEASE-p7) For general information regarding FreeBSD Errata Notices and Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . 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, i386, or (on FreeBSD 13 and later) arm64 platforms 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. # fetch https://security.FreeBSD.org/patches/EN-22:20/tzdata-2022c.patch # fetch https://security.FreeBSD.org/patches/EN-22:20/tzdata-2022c.patch.asc # gpg --verify tzdata-2022c.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 . Restart all the affected applications and daemons, or reboot the system. VI. Correction details This issue is corrected by the corresponding Git commit hash or Subversion revision number in the following stable and release branches: Branch/path Hash Revision - ------------------------------------------------------------------------- stable/13/ f7cb47731675 stable/13-n252124 releng/13.1/ e86b610b8744 releng/13.1-n250157 releng/13.0/ 707cecae4e34 releng/13.0-n244809 stable/12/ r372409 releng/12.3/ r372461 - ------------------------------------------------------------------------- For FreeBSD 13 and later: Run the following command to see which files were modified by a particular commit: # git show --stat Or visit the following URL, replacing NNNNNN with the hash: 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 For FreeBSD 12 and earlier: Run the following command to see which files were modified by a particular revision, replacing NNNNNN with the revision number: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: VII. References The latest revision of this advisory is available at -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAmMOoGgACgkQ05eS9J6n 5cKipg/6Axbh9KTIXF/Z/KZtna+2/Fvs4zIvV1PnT/6VJge9JrPShRtKuTOHE7at 8tFFFLplDV3uGF3PxJ0vB66sd5A7VchS8UDJoyrr8Q1kfOGlMge5W3UQbHp4u4II DCRlvocXIv7SygmfWlrQg5Ia6c2CmIa13BcMcxNv8tu/TShsJZD8AUtu/sF01xZh RaPQE5Y0dMErQx1FpGrxcxqw5DVNz6utpxeGgz8SU/bMRUs17u9HbktiPdDpJVzh gw26DfMJS9CflrTBF1RKmCj6934ghz6fbHqnw7IrcnLjaitVsVqgktFjgmUje9OH JyCvY5ysAYEQD74HxncvgiJ3OjkQ/EYTwdL2lfTZRiWqQjncfFHchZ2ioIslR84e 3NQlJYxosvWa/NIFxclR69I8d9outXRkClAEQo5tgjOPF7Q1F4TzH38IN7YMrwK7 G9N2qXO6+GQo0E2yVmqQbam9KIRsyy9rf5Yp14Lc0P9GFiD0bMok0/C1zfE+Qi9U Y0lM7vtNFg7QM2Gi9OOhaCWJscDDf4OfuxaCWhh8Mq3cNrdaCY56t0SzPKmgF7qY sZPRpI6YXv9+m9c8V+sklPituTMXa2maGzSYJNTOWhDNmf4Ah1YvxbMWhoxI0hsF nSgCr/LQh0c+dTXthIW1fYv4mt5uXXNg5uMs0mIfncLin3syJ7s= =DcSW -----END PGP SIGNATURE-----