# CVE-2024-3094: xz-utils: Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0

CVE-2024-3094 is fixed in xz-utils on 1 platform, first by DEBIAN-CVE-2024-3094, released March 29, 2024. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2024-3094
- Priority: Urgent
- CVSS: 10.0 (critical)
- EPSS: 0.9090
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 29, 2024

## Description

Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0.   Through a series of complex obfuscations, the liblzma build process extracts a prebuilt object file from a disguised test file existing in the source code, which is then used to modify specific functions in the liblzma code. This results in a modified liblzma library that can be used by any software linked against this library, intercepting and modifying the data interaction with this library.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xz-utils Debian 13.5 (trixie) | 5.6.1+really5.4.5-1 | [DEBIAN-CVE-2024-3094](https://patchblox.com/security/data/fix/linux/debian-cve-2024-3094.md) | Mar 29, 2024 |
| Linux | xz-utils Debian 14 | 5.6.1+really5.4.5-1 | [DEBIAN-CVE-2024-3094](https://patchblox.com/security/data/fix/linux/debian-cve-2024-3094.md) | Mar 29, 2024 |

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