# CVE-2022-23308: libxml2: valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. CVE-2022-23308 is fixed in 9 products on 1 platform, first by libxml2 2.9.4+dfsg1-6.1ubuntu1.5, released February 25, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-23308 - Priority: High - CVSS: 8.1 (Medium) - EPSS: 0.0512 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 25, 2022 ## Description valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libxml2 Debian 12.15 (bookworm) | 2.9.13+dfsg-1 | [DEBIAN-CVE-2022-23308](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23308.md) | Feb 26, 2022 | | Linux | libxml2 Debian 13.5 (trixie) | 2.9.13+dfsg-1 | [DEBIAN-CVE-2022-23308](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23308.md) | Feb 26, 2022 | | Linux | libxml2 Debian 14 | 2.9.13+dfsg-1 | [DEBIAN-CVE-2022-23308](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23308.md) | Feb 26, 2022 | | Linux | libxml2 RHEL 8 | 0:2.9.7-12.el8_5 | [RHSA-2022:0899](https://patchblox.com/security/data/fix/linux/rhsa-2022-0899.md) | Mar 15, 2022 | | Linux | libxml2 Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.5 | [libxml2 2.9.4+dfsg1-6.1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxml2-2.9.4-dfsg1-6.1ubuntu1.5.md) | Feb 25, 2022 | | Linux | libxml2 Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.2 | [libxml2 2.9.10+dfsg-5ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libxml2-2.9.10-dfsg-5ubuntu0.20.04.2.md) | Feb 25, 2022 | | Linux | libxml2 amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | libxml2 ol 8 | 0:2.9.7-12.el8_5 | [ELSA-2022-0899](https://patchblox.com/security/data/fix/linux/elsa-2022-0899.md) | Mar 16, 2022 | | Linux | libxml2 rocky 8 | 0:2.9.7-12.el8_5 | [RLSA-2022:0899](https://patchblox.com/security/data/fix/linux/rlsa-2022-0899.md) | Mar 15, 2022 | | Linux | libxml2-debuginfo amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | libxml2-debugsource amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | libxml2-devel RHEL 8 | 0:2.9.7-12.el8_5 | [RHSA-2022:0899](https://patchblox.com/security/data/fix/linux/rhsa-2022-0899.md) | Mar 15, 2022 | | Linux | libxml2-devel almalinux 8 | 2.9.7-12.el8_5 | [ALSA-2022:0899](https://patchblox.com/security/data/fix/linux/alsa-2022-0899.md) | Mar 15, 2022 | | Linux | libxml2-devel amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | libxml2-devel ol 8 | 0:2.9.7-12.el8_5 | [ELSA-2022-0899](https://patchblox.com/security/data/fix/linux/elsa-2022-0899.md) | Mar 16, 2022 | | Linux | libxml2-static amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | libxml2-utils Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.5 | [libxml2-utils 2.9.4+dfsg1-6.1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxml2-utils-2.9.4-dfsg1-6.1ubuntu1.5.md) | Feb 25, 2022 | | Linux | libxml2-utils Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.2 | [libxml2-utils 2.9.10+dfsg-5ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libxml2-utils-2.9.10-dfsg-5ubuntu0.20.04.2.md) | Feb 25, 2022 | | Linux | python-libxml2 Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.5 | [python-libxml2 2.9.4+dfsg1-6.1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-libxml2-2.9.4-dfsg1-6.1ubuntu1.5.md) | Feb 25, 2022 | | Linux | python-libxml2 Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.2 | [python-libxml2 2.9.10+dfsg-5ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-libxml2-2.9.10-dfsg-5ubuntu0.20.04.2.md) | Feb 25, 2022 | | Linux | python3-libxml2 RHEL 8 | 0:2.9.7-12.el8_5 | [RHSA-2022:0899](https://patchblox.com/security/data/fix/linux/rhsa-2022-0899.md) | Mar 15, 2022 | | Linux | python3-libxml2 Ubuntu 18.04.6 LTS (bionic) | 2.9.4+dfsg1-6.1ubuntu1.5 | [python3-libxml2 2.9.4+dfsg1-6.1ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-libxml2-2.9.4-dfsg1-6.1ubuntu1.5.md) | Feb 25, 2022 | | Linux | python3-libxml2 Ubuntu 20.04 LTS (focal) | 2.9.10+dfsg-5ubuntu0.20.04.2 | [python3-libxml2 2.9.10+dfsg-5ubuntu0.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-libxml2-2.9.10-dfsg-5ubuntu0.20.04.2.md) | Feb 25, 2022 | | Linux | python3-libxml2 amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | | Linux | python3-libxml2 ol 8 | 0:2.9.7-12.el8_5 | [ELSA-2022-0899](https://patchblox.com/security/data/fix/linux/elsa-2022-0899.md) | Mar 16, 2022 | | Linux | python3-libxml2-debuginfo amzn 2023 | 2.10.3-2.amzn2023.0.1 | [ALAS2023-2023-096](https://patchblox.com/security/data/fix/linux/alas2023-2023-096.md) | Feb 17, 2023 | --- Data as of 2026-11-08T13:06:02Z UTC. 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