PT-2026-30880 · Red Hat · Red Hat Enterprise Linux 10+5

Published 2026-04-07 · Updated 2026-04-07 · CVE-2026-5745

Mitre

CVSS v3.1

5.5

Medium

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

A flaw was found in libarchive. A NULL pointer dereference vulnerability exists in the ACL parsing logic, specifically within the archive acl from text nl() function. When processing a malformed ACL string (such as a bare "d" or "default" tag without subsequent fields), the function fails to perform adequate validation before advancing the pointer. An attacker can exploit this by providing a maliciously crafted archive, causing an application utilizing the libarchive API (such as bsdtar) to crash, resulting in a Denial of Service (DoS).

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-5745

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Red Hat Openshift Container Platform 4

References · 2

• https://access.redhat.com/security/cve/CVE-2026-5745 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2455921 · Note