6.5

CVE-2026-4426

Libarchive: libarchive: denial of service via malformed iso file processing

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Libarchive ≫ Libarchive Version-
Redhat ≫ Hardened Images Version-
Redhat ≫ Enterprise Linux Version6.0
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.31% 0.219
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-1335 Incorrect Bitwise Shift of Integer

An integer value is specified to be shifted by a negative amount or an amount greater than or equal to the number of bits contained in the value causing an unexpected or indeterminate result.

https://access.redhat.com/security/cve/CVE-2026-4426
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2449010
Third Party Advisory
Issue Tracking
https://github.com/libarchive/libarchive/pull/2897
Patch
Issue Tracking
https://access.redhat.com/errata/RHSA-2026:8944