CVE-2026-17591

Description

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.

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Produits concernés

• Red Hat Hardened Images
• 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

Scores CVSS

Faiblesses (CWE)

• CWE-416

Références

• https://access.redhat.com/errata/RHSA-2026:77775
• https://access.redhat.com/security/cve/CVE-2026-17591
• https://bugzilla.redhat.com/show_bug.cgi?id=2554209
• https://github.com/libarchive/libarchive/pull/3318

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories