# CVE-2026-14164: libarchive13: A double free issue has been identified in libarchive's RAR5 reader CVE-2026-14164 is fixed in 6 products on 1 platform, first by RHSA-2026:56954, released May 24, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-14164 - Priority: High - CVSS: 7.5 (Medium) - EPSS: 0.0079 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 24, 2026 ## Description A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bsdtar RHEL 9 | 0:3.5.3-11.el9_8 | [RHSA-2026:52674](https://patchblox.com/security/data/fix/linux/rhsa-2026-52674.md) | Aug 11, 2026 | | Linux | bsdtar almalinux 10 | 3.7.7-10.el10_2 | [ALSA-2026:52675](https://patchblox.com/security/data/fix/linux/alsa-2026-52675.md) | Aug 10, 2026 | | Linux | bsdtar almalinux 9 | 3.5.3-11.el9_8 | [ALSA-2026:52674](https://patchblox.com/security/data/fix/linux/alsa-2026-52674.md) | Aug 10, 2026 | | Linux | bsdtar ol 10 | 0:3.7.7-10.el10_2 | [ELSA-2026-52675](https://patchblox.com/security/data/fix/linux/elsa-2026-52675.md) | Aug 10, 2026 | | Linux | bsdtar ol 9 | 0:3.5.3-11.el9_8 | [ELSA-2026-52674](https://patchblox.com/security/data/fix/linux/elsa-2026-52674.md) | Aug 10, 2026 | | Linux | libarchive Debian 12.15 (bookworm) | 3.6.2-1+deb12u5 | [DEBIAN-CVE-2026-14164](https://patchblox.com/security/data/fix/linux/debian-cve-2026-14164.md) | Jul 6, 2026 | | Linux | libarchive Debian 14 | 3.8.8-1 | [DEBIAN-CVE-2026-14164](https://patchblox.com/security/data/fix/linux/debian-cve-2026-14164.md) | Jul 6, 2026 | | Linux | libarchive RHEL 10 | 3.7.7-5.el10_0.1 | [RHSA-2026:56954](https://patchblox.com/security/data/fix/linux/rhsa-2026-56954.md) | May 24, 2026 | | Linux | libarchive RHEL 9 | 0:3.5.3-11.el9_8 | [RHSA-2026:52674](https://patchblox.com/security/data/fix/linux/rhsa-2026-52674.md) | Aug 11, 2026 | | Linux | libarchive almalinux 10 | 3.7.7-10.el10_2 | [ALSA-2026:52675](https://patchblox.com/security/data/fix/linux/alsa-2026-52675.md) | Aug 10, 2026 | | Linux | libarchive almalinux 9 | 3.5.3-11.el9_8 | [ALSA-2026:52674](https://patchblox.com/security/data/fix/linux/alsa-2026-52674.md) | Aug 10, 2026 | | Linux | libarchive ol 10 | 0:3.7.7-10.el10_2 | [ELSA-2026-52675](https://patchblox.com/security/data/fix/linux/elsa-2026-52675.md) | Aug 10, 2026 | | Linux | libarchive ol 9 | 0:3.5.3-11.el9_8 | [ELSA-2026-52674](https://patchblox.com/security/data/fix/linux/elsa-2026-52674.md) | Aug 10, 2026 | | Linux | libarchive rocky 10 | 0:3.7.7-10.el10_2 | [RLSA-2026:52675](https://patchblox.com/security/data/fix/linux/rlsa-2026-52675.md) | Aug 11, 2026 | | Linux | libarchive rocky 9 | 0:3.5.3-11.el9_8 | [RLSA-2026:52674](https://patchblox.com/security/data/fix/linux/rlsa-2026-52674.md) | Aug 11, 2026 | | Linux | libarchive-devel RHEL 9 | 0:3.5.3-11.el9_8 | [RHSA-2026:52674](https://patchblox.com/security/data/fix/linux/rhsa-2026-52674.md) | Aug 11, 2026 | | Linux | libarchive-devel almalinux 10 | 3.7.7-10.el10_2 | [ALSA-2026:52675](https://patchblox.com/security/data/fix/linux/alsa-2026-52675.md) | Aug 10, 2026 | | Linux | libarchive-devel almalinux 9 | 3.5.3-11.el9_8 | [ALSA-2026:52674](https://patchblox.com/security/data/fix/linux/alsa-2026-52674.md) | Aug 10, 2026 | | Linux | libarchive-devel ol 10 | 0:3.7.7-10.el10_2 | [ELSA-2026-52675](https://patchblox.com/security/data/fix/linux/elsa-2026-52675.md) | Aug 10, 2026 | | Linux | libarchive-devel ol 9 | 0:3.5.3-11.el9_8 | [ELSA-2026-52674](https://patchblox.com/security/data/fix/linux/elsa-2026-52674.md) | Aug 10, 2026 | | Linux | libarchive-tools Ubuntu 20.04 LTS (focal) | 3.4.0-2ubuntu1.5+esm3 | [libarchive-tools 3.4.0-2ubuntu1.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libarchive-tools-3.4.0-2ubuntu1.5-esm3.md) | Jul 24, 2026 | | Linux | libarchive-tools Ubuntu 22.04.1 LTS (jammy) | 3.6.0-1ubuntu1.8 | [libarchive-tools 3.6.0-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libarchive-tools-3.6.0-1ubuntu1.8.md) | Jul 24, 2026 | | Linux | libarchive-tools Ubuntu 24.04.5 LTS (noble) | 3.7.2-2ubuntu0.8 | [libarchive-tools 3.7.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libarchive-tools-3.7.2-2ubuntu0.8.md) | Jul 24, 2026 | | Linux | libarchive-tools Ubuntu 26.04.1 LTS (resolute) | 3.8.5-1ubuntu2.2 | [libarchive-tools 3.8.5-1ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libarchive-tools-3.8.5-1ubuntu2.2.md) | Jul 10, 2026 | | Linux | libarchive13 Ubuntu 20.04 LTS (focal) | 3.4.0-2ubuntu1.5+esm3 | [libarchive13 3.4.0-2ubuntu1.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libarchive13-3.4.0-2ubuntu1.5-esm3.md) | Jul 24, 2026 | | Linux | libarchive13 Ubuntu 22.04.1 LTS (jammy) | 3.6.0-1ubuntu1.8 | [libarchive13 3.6.0-1ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libarchive13-3.6.0-1ubuntu1.8.md) | Jul 24, 2026 | | Linux | libarchive13t64 Ubuntu 24.04.5 LTS (noble) | 3.7.2-2ubuntu0.8 | [libarchive13t64 3.7.2-2ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libarchive13t64-3.7.2-2ubuntu0.8.md) | Jul 24, 2026 | | Linux | libarchive13t64 Ubuntu 26.04.1 LTS (resolute) | 3.8.5-1ubuntu2.2 | [libarchive13t64 3.8.5-1ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libarchive13t64-3.8.5-1ubuntu2.2.md) | Jul 10, 2026 | --- Data as of 2026-11-09T07:25:28Z UTC. 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