# CVE-2024-56431: libtheora: oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift

CVE-2024-56431 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2024-56431, released December 25, 2024. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2024-56431
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0184
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 25, 2024

## Description

oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift. NOTE: this is disputed by third parties because there is no evidence of a security impact, e.g., an application would not crash.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libtheora Debian 13.5 (trixie) | 1.2.0~alpha1+dfsg-6 | [DEBIAN-CVE-2024-56431](https://patchblox.com/security/data/fix/linux/debian-cve-2024-56431.md) | Dec 25, 2024 |
| Linux | libtheora Debian 14 | 1.2.0~alpha1+dfsg-6 | [DEBIAN-CVE-2024-56431](https://patchblox.com/security/data/fix/linux/debian-cve-2024-56431.md) | Dec 25, 2024 |
| Linux | mozjs102 opensuse-leap 15.6 | 102.15.1-bp156.3.3.1 | [OPENSUSE-SU-2025:0147-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-0147-1.md) | May 9, 2025 |
| Linux | mozjs115 opensuse-leap 15.6 | 115.4.0-150600.3.9.1 | [SUSE-SU-2025:1340-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1340-1.md) | Apr 17, 2025 |
| Linux | mozjs115 sles 15.6 | 115.4.0-150600.3.9.1 | [SUSE-SU-2025:1340-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1340-1.md) | Apr 17, 2025 |
| Linux | mozjs52 opensuse-leap 15.6 | 52.6.0-150000.3.6.1 | [SUSE-SU-2025:1287-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1287-1.md) | Apr 15, 2025 |
| Linux | mozjs52 sles 15.6 | 52.6.0-150000.3.6.1 | [SUSE-SU-2025:1287-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1287-1.md) | Apr 15, 2025 |
| Linux | mozjs60 opensuse-leap 15.6 | 60.9.0-150200.6.3.1 | [SUSE-SU-2025:1365-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1365-1.md) | Apr 24, 2025 |
| Linux | mozjs60 sles 15.6 | 60.9.0-150200.6.3.1 | [SUSE-SU-2025:1365-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1365-1.md) | Apr 24, 2025 |
| Linux | mozjs78 opensuse-leap 15.6 | 78.15.0-150400.3.14.1 | [SUSE-SU-2025:1288-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1288-1.md) | Apr 15, 2025 |
| Linux | mozjs78 sles 15.6 | 78.15.0-150400.3.14.1 | [SUSE-SU-2025:1288-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-1288-1.md) | Apr 15, 2025 |

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Data as of 2026-11-09T13:31:49Z 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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