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 exte…
Medium CVSS 6.5
Summary
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.
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://access.redhat.com/errata/RHSA-2026:8944
- https://access.redhat.com/security/cve/CVE-2026-4426 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2449010 Issue Tracking
- https://github.com/libarchive/libarchive/pull/2897 Issue Tracking
Timeline
- nvd_ingest NVD