CVE-2024-56431

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.

The following products are affected by CVE-2024-56431 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-56431.

URL	Resource
http://www.openwall.com/lists/oss-security/2025/04/25/4
http://www.openwall.com/lists/oss-security/2025/04/25/6
https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC
https://github.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c#L193
https://github.com/xiph/theora/issues/17#issuecomment-2480630603
https://nvd.nist.gov/vuln/detail/CVE-2024-56431
https://www.cve.org/CVERecord?id=CVE-2024-56431
https://www.openwall.com/lists/oss-security/2025/04/25/6