# CVE-2026-4111: Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive CVE-2026-4111 is fixed in 7 products on 1 platform, first by bsdcpio 3.2.2-3.1ubuntu0.7+esm2, released March 13, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-4111 - Priority: High - CVSS: 7.5 (Important) - EPSS: 0.0072 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 11, 2026 - Weakness: Loop with Unreachable Exit Condition ('Infinite Loop') - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4111 ## Description The libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers. Security Fix(es): * libarchive: Infinite Loop Denial of Service in RAR5 Decompression via archive_read_data() in libarchive (CVE-2026-4111) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bsdcpio Ubuntu 18.04.6 LTS (bionic) | 3.2.2-3.1ubuntu0.7+esm2 | [bsdcpio 3.2.2-3.1ubuntu0.7+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-bsdcpio-3.2.2-3.1ubuntu0.7-esm2.md) | Mar 13, 2026 | | Linux | bsdtar RHEL 9 | 0:3.5.3-7.el9_7 | [RHSA-2026:5080](https://patchblox.com/security/data/fix/linux/rhsa-2026-5080.md) | Apr 15, 2026 | | Linux | bsdtar Ubuntu 18.04.6 LTS (bionic) | 3.2.2-3.1ubuntu0.7+esm2 | [bsdtar 3.2.2-3.1ubuntu0.7+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-bsdtar-3.2.2-3.1ubuntu0.7-esm2.md) | Mar 13, 2026 | | Linux | bsdtar almalinux 10 | 3.7.7-5.el10_1 | [ALSA-2026:5063](https://patchblox.com/security/data/fix/linux/alsa-2026-5063.md) | Mar 19, 2026 | | Linux | bsdtar almalinux 9 | 3.5.3-7.el9_7 | [ALSA-2026:5080](https://patchblox.com/security/data/fix/linux/alsa-2026-5080.md) | Mar 19, 2026 | | Linux | bsdtar ol 10 | 0:3.7.7-5.el10_1 | [ELSA-2026-5063](https://patchblox.com/security/data/fix/linux/elsa-2026-5063.md) | Mar 19, 2026 | | Linux | bsdtar ol 9 | 0:3.5.3-7.el9_7 | [ELSA-2026-5080](https://patchblox.com/security/data/fix/linux/elsa-2026-5080.md) | Mar 19, 2026 | | Linux | libarchive Debian 12.15 (bookworm) | 3.6.2-1+deb12u4 | [DEBIAN-CVE-2026-4111](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4111.md) | Mar 13, 2026 | | Linux | libarchive Debian 13.5 (trixie) | 3.7.4-4+deb13u1 | [DEBIAN-CVE-2026-4111](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4111.md) | Mar 13, 2026 | | Linux | libarchive Debian 14 | 3.8.6-1 | [DEBIAN-CVE-2026-4111](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4111.md) | Mar 13, 2026 | | Linux | libarchive RHEL 10 | 3.7.7-5.el10_0 | [RHSA-2026:8865](https://patchblox.com/security/data/fix/linux/rhsa-2026-8865.md) | Apr 15, 2026 | | Linux | libarchive RHEL 9 | 0:3.5.3-7.el9_7 | [RHSA-2026:5080](https://patchblox.com/security/data/fix/linux/rhsa-2026-5080.md) | Apr 15, 2026 | | Linux | libarchive almalinux 10 | 3.7.7-5.el10_1 | [ALSA-2026:5063](https://patchblox.com/security/data/fix/linux/alsa-2026-5063.md) | Mar 19, 2026 | | Linux | libarchive almalinux 9 | 3.5.3-7.el9_7 | [ALSA-2026:5080](https://patchblox.com/security/data/fix/linux/alsa-2026-5080.md) | Mar 19, 2026 | | Linux | libarchive ol 10 | 0:3.7.7-5.el10_1 | [ELSA-2026-5063](https://patchblox.com/security/data/fix/linux/elsa-2026-5063.md) | Mar 19, 2026 | | Linux | libarchive ol 9 | 0:3.5.3-7.el9_7 | [ELSA-2026-5080](https://patchblox.com/security/data/fix/linux/elsa-2026-5080.md) | Mar 19, 2026 | | Linux | libarchive rocky 10 | 0:3.7.7-5.el10_1 | [RLSA-2026:5063](https://patchblox.com/security/data/fix/linux/rlsa-2026-5063.md) | Mar 27, 2026 | | Linux | libarchive rocky 9 | 0:3.5.3-7.el9_7 | [RLSA-2026:5080](https://patchblox.com/security/data/fix/linux/rlsa-2026-5080.md) | Mar 26, 2026 | | Linux | libarchive sles 15.6 | 3.7.2-150600.3.20.1 | [SUSE-SU-2026:2490-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2490-1.md) | Jun 22, 2026 | | Linux | libarchive sles 15.7 | 3.7.2-150600.3.20.1 | [SUSE-SU-2026:2490-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2490-1.md) | Jun 22, 2026 | | Linux | libarchive-devel RHEL 9 | 0:3.5.3-7.el9_7 | [RHSA-2026:5080](https://patchblox.com/security/data/fix/linux/rhsa-2026-5080.md) | Apr 15, 2026 | | Linux | libarchive-devel almalinux 10 | 3.7.7-5.el10_1 | [ALSA-2026:5063](https://patchblox.com/security/data/fix/linux/alsa-2026-5063.md) | Mar 19, 2026 | | Linux | libarchive-devel almalinux 9 | 3.5.3-7.el9_7 | [ALSA-2026:5080](https://patchblox.com/security/data/fix/linux/alsa-2026-5080.md) | Mar 19, 2026 | | Linux | libarchive-devel ol 10 | 0:3.7.7-5.el10_1 | [ELSA-2026-5063](https://patchblox.com/security/data/fix/linux/elsa-2026-5063.md) | Mar 19, 2026 | | Linux | libarchive-devel ol 9 | 0:3.5.3-7.el9_7 | [ELSA-2026-5080](https://patchblox.com/security/data/fix/linux/elsa-2026-5080.md) | Mar 19, 2026 | | Linux | libarchive-tools Ubuntu 18.04.6 LTS (bionic) | 3.2.2-3.1ubuntu0.7+esm2 | [libarchive-tools 3.2.2-3.1ubuntu0.7+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libarchive-tools-3.2.2-3.1ubuntu0.7-esm2.md) | Mar 13, 2026 | | Linux | libarchive-tools Ubuntu 20.04 LTS (focal) | 3.4.0-2ubuntu1.5+esm1 | [libarchive-tools 3.4.0-2ubuntu1.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libarchive-tools-3.4.0-2ubuntu1.5-esm1.md) | Mar 13, 2026 | | Linux | libarchive-tools Ubuntu 22.04.1 LTS (jammy) | 3.6.0-1ubuntu1.6 | [libarchive-tools 3.6.0-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libarchive-tools-3.6.0-1ubuntu1.6.md) | Mar 13, 2026 | | Linux | libarchive-tools Ubuntu 24.04.5 LTS (noble) | 3.7.2-2ubuntu0.6 | [libarchive-tools 3.7.2-2ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libarchive-tools-3.7.2-2ubuntu0.6.md) | Mar 13, 2026 | | Linux | libarchive-tools Ubuntu 25.10 (questing) | 3.7.7-0ubuntu3.1 | [libarchive-tools 3.7.7-0ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libarchive-tools-3.7.7-0ubuntu3.1.md) | Mar 13, 2026 | | Linux | libarchive13 Ubuntu 18.04.6 LTS (bionic) | 3.2.2-3.1ubuntu0.7+esm2 | [libarchive13 3.2.2-3.1ubuntu0.7+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libarchive13-3.2.2-3.1ubuntu0.7-esm2.md) | Mar 13, 2026 | | Linux | libarchive13 Ubuntu 20.04 LTS (focal) | 3.4.0-2ubuntu1.5+esm1 | [libarchive13 3.4.0-2ubuntu1.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libarchive13-3.4.0-2ubuntu1.5-esm1.md) | Mar 13, 2026 | | Linux | libarchive13 Ubuntu 22.04.1 LTS (jammy) | 3.6.0-1ubuntu1.6 | [libarchive13 3.6.0-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libarchive13-3.6.0-1ubuntu1.6.md) | Mar 13, 2026 | | Linux | libarchive13t64 Ubuntu 24.04.5 LTS (noble) | 3.7.2-2ubuntu0.6 | [libarchive13t64 3.7.2-2ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libarchive13t64-3.7.2-2ubuntu0.6.md) | Mar 13, 2026 | | Linux | libarchive13t64 Ubuntu 25.10 (questing) | 3.7.7-0ubuntu3.1 | [libarchive13t64 3.7.7-0ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libarchive13t64-3.7.7-0ubuntu3.1.md) | Mar 13, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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