CVE-2026-122329 SDL_mixer 3.1.2 through 3.2.4 Stack-based Buffer Overflow via FetchXLaw() in AIFF Decoder

High 8.5 Published 5 Nov 2026 Updated 9 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-122329?

CVE-2026-122329 is a high-severity vulnerability in libsdl-org SDL_mixer, published on 5 Nov 2026.

Official description

SDL_mixer 3.1.2 through 3.2.4 contains a stack-based buffer overflow in FetchXLaw() in src/decoder_aiff.c due to miscalculated output offsets when expanding A-law or mu-law samples. Attackers can supply a crafted AIFF-C file that overwrites roughly 1 KB of adjacent stack memory when decoded, causing crashes or potential code execution.

Weakness: CWE-121

Which versions are affected by CVE-2026-122329?

How do I fix CVE-2026-122329?

No fix has been published for CVE-2026-122329 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-122329 being exploited?

There is no known exploitation of CVE-2026-122329 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2026-122329, GHSA-782g-354j-4465, UBUNTU-CVE-2026-122329.