SDLmixer 3.1.2 through 3.2.4 contains a stack-based buffer overflow vulnerability in FetchXLaw() of src/decoderwav.c when decoding A-law or…
CVE-2026-122328
SDLmixer 3.1.2 through 3.2.4 contains a stack-based buffer overflow vulnerability in FetchXLaw() of src/decoderwav.c when decoding A-law or mu-law WAV files. Attackers can supply a crafted WAV file whose doubly-offset float expansion overwrites about 1 KB of adjacent stack memory, causing crashes or potentially code execution.
Assessment
- CVSS
- 8.5 (v4.0)
- Severity
- High
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 5 November 2026
- Last updated
- 5 November 2026
- Affected
- libsdl-org · SDL_mixer
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://github.com/libsdl-org/SDL_mixer/issues/907
- https://github.com/libsdl-org/SDL_mixer/pull/910
- https://github.com/libsdl-org/SDL_mixer/commit/df966f698e18ae849bd92796a26311e79c555718
- https://github.com/libsdl-org/SDL_mixer/blob/release-3.2.4/src/decoder_wav.c#L750-761
- https://github.com/libsdl-org/SDL_mixer/blob/release-3.2.4/src/decoder_wav.c#L1658-1659
- https://hackmd.io/@haindpwn/sdl-mixer-fetchxlaw-stack-overflow
- https://github.com/libsdl-org/SDL_mixer
- https://www.vulncheck.com/advisories/sdl-mixer-3.1.2-through-3.2.4-stack-based-buffer-overflow-via-fetchxlaw-in-wav-decoder
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