Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xiph | Theora | < 1.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoCExploit
- https://github.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/libProduct
- https://github.com/xiph/theora/issues/17#issuecomment-2480630603Issue Tracking
- https://www.openwall.com/lists/oss-security/2025/04/25/6
- http://www.openwall.com/lists/oss-security/2025/04/25/4
- http://www.openwall.com/lists/oss-security/2025/04/25/6
FAQ
What is CVE-2024-56431?
CVE-2024-56431 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 impac...
How severe is CVE-2024-56431?
CVE-2024-56431 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2024-56431?
Check the references section above for vendor advisories and patch information. Affected products include: Xiph Theora.