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Affected Component
Analysis
libarchive
Patched
Name
CVE-2026-5745
Description
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).
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/security/cve/CVE-2026-5745Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2455921Issue Tracking
Analysis#
Vulnerability Ratings#
5.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
libarchive (yocto:scarthgap)
#
Title
Author
Resolve
1
Merge pull request #2905 from Patsakas/Patsakas-fix-acl-bug
Tim Kientzle <kientzle@acm.org>
CVE-2026-5745