CVE-2026-125174 (GCVE-0-2026-125174)
Vulnerability from cvelistv5 – Published: 2026-11-09 19:11 – Updated: 2026-11-09 21:06
VLAI
EPSS
VEX
Title
FFmpeg before 8.1.3 and 9.x before 9.0.2 NULL Pointer Dereference via ff_hap_set_chunk_count()
Summary
FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a NULL pointer dereference vulnerability in ff_hap_set_chunk_count() in libavcodec/hap.c, where a shadowed return variable masks reallocation failures. Attackers can supply a crafted Hap video frame with an oversized chunk count so the decoder writes through a NULL chunk table, crashing the application.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 21:03 UTC
CWE
- CWE-252 - Unchecked Return Value
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24487 | issue-tracking |
| https://github.com/FFmpeg/FFmpeg/commit/f8c4c6400… | patch |
| https://github.com/FFmpeg/FFmpeg/blob/n9.0.1/liba… | technical-description |
| https://github.com/FFmpeg/FFmpeg | product |
| https://www.vulncheck.com/advisories/ffmpeg-befor… | third-party-advisory |
Impacted products
Date Public
2026-09-14 00:00
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