by Kastro
Paper/Archive/CVE-2024-56431

CVE-2024-56431

mitre — oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift.

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 79.0.790 × 2015.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/xiph/theora/issues/17#issuecomment-2480630603refgithub.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c#L193refgithub.com/UnionTech-Software/libtheora-CVE-2024-56431-PoCrefopenwall.com/lists/oss-security/2025/04/25/6refopenwall.com/lists/oss-security/2025/04/25/4refopenwall.com/lists/oss-security/2025/04/25/6