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Debian LTS Advisory DLA-3950-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                          Adrian Bunk
November 11, 2024                             https://wiki.debian.org/LTS
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Package        : libarchive
Version        : 3.4.3-2+deb11u2
CVE ID         : CVE-2021-36976 CVE-2022-26280 CVE-2022-36227 CVE-2024-20696
Debian Bug     : 991442 1008953 1024669 1086155

Multiple vulnerabilities have been fixed in libarchive,
a multi-format archive and compression library.

CVE-2021-36976

    RAR reader use-after-free

CVE-2022-26280

    ZIP reader out-of-bounds-read

CVE-2022-36227

    archive_write NULL dereference

CVE-2024-20696

    RAR reader out-of-bounds write

For Debian 11 bullseye, these problems have been fixed in version
3.4.3-2+deb11u2.

We recommend that you upgrade your libarchive packages.

For the detailed security status of libarchive please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libarchive

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS