CVE-2026-17591

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2026
Source publication: Oct 16, 2026
Source updated: Oct 19, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Libarchive: libarchive: use-after-free via aliased mac metadata copy

A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Hardened Images

Vendor: Red Hat
Product: Red Hat Hardened Images
Platforms: Unknown
Default status: affected
Package: libarchive-main
Package collection: https://catalog.redhat.com/software/containers/

Red Hat Hardened Images · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
3.8.9-2.1.hum1	`unaffected`	rpm	*	Unavailable	None listed