High RHSA-2026:8517 2 CVEs

Red Hat Security Advisory: libarchive security update

Published Apr 17, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 5

Release	Package	Fixed in
Red Hat · RHEL 7 ELS rhel_els:7	bsdcpio	0:3.1.2-14.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7	bsdtar	0:3.1.2-14.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7	libarchive	0:3.1.2-14.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7	libarchive-debuginfo	0:3.1.2-14.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7	libarchive-devel	0:3.1.2-14.el7_9.2

Vulnerabilities 2

High 7.5

CVE-2026-4424

Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this …

Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 6 Linux Debian Ubuntu Azure Linux Wolfi

Mar 19, 2026
High 7.5

CVE-2026-5121

Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overfl…

Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 6 Linux Debian Ubuntu Azure Linux Wolfi

Mar 30, 2026

References

article
https://access.redhat.com/security/updates/classification/#important
report
https://bugzilla.redhat.com/show_bug.cgi?id=2449006
report
https://bugzilla.redhat.com/show_bug.cgi?id=2452945
advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_8517.json
report
https://access.redhat.com/security/cve/CVE-2026-4424
advisory
https://www.cve.org/CVERecord?id=CVE-2026-4424
advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-4424
article
https://github.com/libarchive/libarchive/pull/2898
report
https://access.redhat.com/security/cve/CVE-2026-5121
advisory
https://www.cve.org/CVERecord?id=CVE-2026-5121
advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-5121
advisory
https://github.com/advisories/GHSA-2vwv-vqpv-v8vc
article
https://github.com/libarchive/libarchive/pull/2934