# CVE-2025-49795: Libxml: null pointer dereference leads to denial of service (dos) CVE-2025-49795 is fixed in 10 products on 1 platform, first by RHSA-2025:10630, released June 12, 2025. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2025-49795 - Priority: High - CVSS: 9.1 (Moderate) - EPSS: 0.0059 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 11, 2025 - Weakness: Expired Pointer Dereference - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49795 ## Description A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libxml2 RHEL 10 | 2.12.5-7.el10_0 | [RHSA-2025:10630](https://patchblox.com/security/data/fix/linux/rhsa-2025-10630.md) | Jun 12, 2025 | | Linux | libxml2 almalinux 10 | 2.12.5-7.el10_0 | [ALSA-2025:10630](https://patchblox.com/security/data/fix/linux/alsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | libxml2 ol 10 | 0:2.12.5-7.el10_0 | [ELSA-2025-10630](https://patchblox.com/security/data/fix/linux/elsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2 opensuse-leap 15.6 | 2.10.3-150500.5.29.1 | [SUSE-SU-2025:02314-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02314-1.md) | Jul 15, 2025 | | Linux | libxml2 rocky 10 | 0:2.12.5-7.el10_0 | [RLSA-2025:10630](https://patchblox.com/security/data/fix/linux/rlsa-2025-10630.md) | Oct 3, 2025 | | Linux | libxml2 sles 15.6 | 2.10.3-150500.5.29.1 | [SUSE-SU-2025:02314-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02314-1.md) | Jul 15, 2025 | | Linux | libxml2 sles 15.7 | 2.12.10-150700.4.3.1 | [SUSE-SU-2025:02260-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02260-1.md) | Jul 9, 2025 | | Linux | libxml2-16 Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2 | [libxml2-16 2.14.5+dfsg-0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libxml2-16-2.14.5-dfsg-0.2.md) | Jun 16, 2025 | | Linux | libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | libxml2-debugsource amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | libxml2-devel almalinux 10 | 2.12.5-7.el10_0 | [ALSA-2025:10630](https://patchblox.com/security/data/fix/linux/alsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2-devel amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | libxml2-devel ol 10 | 0:2.12.5-7.el10_0 | [ELSA-2025-10630](https://patchblox.com/security/data/fix/linux/elsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2-python opensuse-leap 15.6 | 2.10.3-150500.5.29.1 | [SUSE-SU-2025:02314-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02314-1.md) | Jul 15, 2025 | | Linux | libxml2-python sles 15.6 | 2.10.3-150500.5.29.1 | [SUSE-SU-2025:02314-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02314-1.md) | Jul 15, 2025 | | Linux | libxml2-python sles 15.7 | 2.12.10-150700.4.3.1 | [SUSE-SU-2025:02260-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02260-1.md) | Jul 9, 2025 | | Linux | libxml2-static almalinux 10 | 2.12.5-7.el10_0 | [ALSA-2025:10630](https://patchblox.com/security/data/fix/linux/alsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2-static amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | libxml2-static ol 10 | 0:2.12.5-7.el10_0 | [ELSA-2025-10630](https://patchblox.com/security/data/fix/linux/elsa-2025-10630.md) | Jul 8, 2025 | | Linux | libxml2-utils Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2 | [libxml2-utils 2.14.5+dfsg-0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libxml2-utils-2.14.5-dfsg-0.2.md) | Jun 16, 2025 | | Linux | python3-libxml2 Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2 | [python3-libxml2 2.14.5+dfsg-0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-python3-libxml2-2.14.5-dfsg-0.2.md) | Jun 16, 2025 | | Linux | python3-libxml2 almalinux 10 | 2.12.5-7.el10_0 | [ALSA-2025:10630](https://patchblox.com/security/data/fix/linux/alsa-2025-10630.md) | Jul 8, 2025 | | Linux | python3-libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | | Linux | python3-libxml2 ol 10 | 0:2.12.5-7.el10_0 | [ELSA-2025-10630](https://patchblox.com/security/data/fix/linux/elsa-2025-10630.md) | Jul 8, 2025 | | Linux | python3-libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.12 | [ALAS2023-2025-1103](https://patchblox.com/security/data/fix/linux/alas2023-2025-1103.md) | Jul 21, 2025 | --- Data as of 2026-11-08T06:59:42Z UTC. 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