# CVE-2023-45322: libxml2: libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails

CVE-2023-45322 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2023-45322, released October 6, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-45322
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0097
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 6, 2023

## Description

libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when memory allocations fail."

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libxml2 Debian 12.15 (bookworm) | 2.9.14+dfsg-1.3~deb12u2 | [DEBIAN-CVE-2023-45322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45322.md) | Oct 6, 2023 |
| Linux | libxml2 Debian 13.5 (trixie) | 2.12.7+dfsg+really2.9.14-1 | [DEBIAN-CVE-2023-45322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45322.md) | Oct 6, 2023 |
| Linux | libxml2 Debian 14 | 2.12.7+dfsg+really2.9.14-1 | [DEBIAN-CVE-2023-45322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45322.md) | Oct 6, 2023 |
| Linux | libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | libxml2-debugsource amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | libxml2-devel amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | libxml2-static amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | python3-libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |
| Linux | python3-libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.6 | [ALAS2023-2023-411](https://patchblox.com/security/data/fix/linux/alas2023-2023-411.md) | Oct 30, 2023 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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