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Affected Component
Analysis
libarchive
Patched
Name
CVE-2026-5121
Description
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 overflow. This could potentially allow for arbitrary code execution on the affected system.
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/security/cve/CVE-2026-5121Third Party Advisory
https://github.com/advisories/GHSA-2vwv-vqpv-v8vcThird Party Advisory
https://github.com/libarchive/libarchive/pull/2934Issue Tracking
Analysis#
Vulnerability Ratings#
7.5
CVSSv31
9.8
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
libarchive (yocto:scarthgap)
#
Title
Author
Resolve
1
Add regression test for zisofs 32-bit heap overflow
elhananhaenel <elhanan.haenel@mail.huji.ac.il>
CVE-2026-5121
2
iso9660: validate pz_log2_bs in parse_rockridge_ZF1()
elhananhaenel <elhanan.haenel@mail.huji.ac.il>
CVE-2026-4426
CVE-2026-5121