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Affected Component
Analysis
libarchive
Not Affected
Name
CVE-2026-4426
Description
A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/security/cve/CVE-2026-4426Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2449010Issue Tracking
https://github.com/libarchive/libarchive/pull/2897Issue Tracking
Analysis#
Vulnerability Ratings#
6.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
libarchive (yocto:scarthgap)
#
Title
Author
Resolve
1
iso9660: validate pz_log2_bs in parse_rockridge_ZF1()
elhananhaenel <elhanan.haenel@mail.huji.ac.il>
CVE-2026-4426