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CVE-2026-17591

CVE-2026-17591 · Libarchive: libarchive: use-after-free via aliased mac metadata copy

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 3.6 · Low · EPSS 0.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat hardened images

    Versions
    • ≥ 3.8.9-2.1.hum1: Not affected (rpm)

    No fix published

  • red hat enterprise linux 10

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • libarchive Debian:12

    Versions
    • 3.6.2-1
    • 3.6.2-1+deb12u1
    • 3.6.2-1+deb12u2
    • 3.6.2-1+deb12u3
    • 3.6.2-1+deb12u4
    • 3.6.2-1+deb12u5
    • 3.7.2-1
    • 3.7.2-1.1
    • 3.7.2-1.1~exp1
    • 3.7.2-2
    • 3.7.2-2.1
    • 3.7.4-1
    • 3.7.4-1.1
    • 3.7.4-2
    • 3.7.4-3
    • 3.7.4-4
    • 3.8.4-1
    • 3.8.5-1
    • 3.8.6-1
    • 3.8.7-1
    • 3.8.8-1
    • 3.8.8-2
    • 3.8.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Debian:13

    Versions
    • 3.7.4-4
    • 3.7.4-4+deb13u1
    • 3.8.4-1
    • 3.8.5-1
    • 3.8.6-1
    • 3.8.7-1
    • 3.8.8-1
    • 3.8.8-2
    • 3.8.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Debian:14

    Versions
    • 3.7.4-4
    • 3.8.4-1
    • 3.8.5-1
    • 3.8.6-1
    • 3.8.7-1
    • 3.8.8-1
    • 3.8.8-2
    Affected ranges
    • ECOSYSTEM: < 3.8.9-1

    Update to 3.8.9-1

  • libarchive Ubuntu:Pro:14.04:LTS

    Versions
    • 3.1.2-5ubuntu1
    • 3.1.2-7ubuntu1
    • 3.1.2-7ubuntu2
    • 3.1.2-7ubuntu2.1
    • 3.1.2-7ubuntu2.2
    • 3.1.2-7ubuntu2.3
    • 3.1.2-7ubuntu2.4
    • 3.1.2-7ubuntu2.6
    • 3.1.2-7ubuntu2.7
    • 3.1.2-7ubuntu2.8
    • 3.1.2-7ubuntu2.8+esm1
    • 3.1.2-7ubuntu2.8+esm3
    • 3.1.2-7ubuntu2.8+esm4
    • 3.1.2-7ubuntu2.8+esm5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:Pro:16.04:LTS

    Versions
    • 3.1.2-11build1
    • 3.1.2-11ubuntu0.16.04.1
    • 3.1.2-11ubuntu0.16.04.2
    • 3.1.2-11ubuntu0.16.04.3
    • 3.1.2-11ubuntu0.16.04.4
    • 3.1.2-11ubuntu0.16.04.5
    • 3.1.2-11ubuntu0.16.04.6
    • 3.1.2-11ubuntu0.16.04.7
    • 3.1.2-11ubuntu0.16.04.8
    • 3.1.2-11ubuntu0.16.04.8+esm1
    • 3.1.2-11ubuntu0.16.04.8+esm2
    • 3.1.2-11ubuntu0.16.04.8+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:Pro:18.04:LTS

    Versions
    • 3.2.2-3.1
    • 3.2.2-3.1ubuntu0.1
    • 3.2.2-3.1ubuntu0.2
    • 3.2.2-3.1ubuntu0.3
    • 3.2.2-3.1ubuntu0.4
    • 3.2.2-3.1ubuntu0.5
    • 3.2.2-3.1ubuntu0.6
    • 3.2.2-3.1ubuntu0.7
    • 3.2.2-3.1ubuntu0.7+esm1
    • 3.2.2-3.1ubuntu0.7+esm2
    • 3.2.2-3.1ubuntu0.7+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:Pro:20.04:LTS

    Versions
    • 3.4.0-1
    • 3.4.0-1build1
    • 3.4.0-1ubuntu2
    • 3.4.0-2ubuntu1
    • 3.4.0-2ubuntu1.1
    • 3.4.0-2ubuntu1.2
    • 3.4.0-2ubuntu1.3
    • 3.4.0-2ubuntu1.4
    • 3.4.0-2ubuntu1.5
    • 3.4.0-2ubuntu1.5+esm1
    • 3.4.0-2ubuntu1.5+esm2
    • 3.4.0-2ubuntu1.5+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:22.04:LTS

    Versions
    • 3.4.3-2
    • 3.4.3-2build1
    • 3.5.2-1
    • 3.5.2-1ubuntu1
    • 3.6.0-1ubuntu1
    • 3.6.0-1ubuntu1.1
    • 3.6.0-1ubuntu1.2
    • 3.6.0-1ubuntu1.3
    • 3.6.0-1ubuntu1.4
    • 3.6.0-1ubuntu1.5
    • 3.6.0-1ubuntu1.6
    • 3.6.0-1ubuntu1.7
    • 3.6.0-1ubuntu1.8
    • 3.6.0-1ubuntu1.9
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:24.04:LTS

    Versions
    • 3.6.2-1ubuntu1
    • 3.7.2-1ubuntu1
    • 3.7.2-1ubuntu2
    • 3.7.2-1.1ubuntu2
    • 3.7.2-2
    • 3.7.2-2ubuntu0.1
    • 3.7.2-2ubuntu0.2
    • 3.7.2-2ubuntu0.3
    • 3.7.2-2ubuntu0.4
    • 3.7.2-2ubuntu0.5
    • 3.7.2-2ubuntu0.6
    • 3.7.2-2ubuntu0.7
    • 3.7.2-2ubuntu0.8
    • 3.7.2-2ubuntu0.9
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libarchive Ubuntu:26.04:LTS

    Versions
    • 3.7.7-0ubuntu3
    • 3.8.5-1ubuntu1
    • 3.8.5-1ubuntu2
    • 3.8.5-1ubuntu2.1
    • 3.8.5-1ubuntu2.2
    • 3.8.5-1ubuntu2.3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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