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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.
References
www.openwall.com/lists/oss-security/2025/04/25/4
www.openwall.com/lists/oss-security/2025/04/25/6
github.com/xiph/theora/issues/17
github.com/...76af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c
github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC
www.openwall.com/lists/oss-security/2025/04/25/6