FFmpeg through 9.0.2 Heap Buffer Overflow via PSD Decoder RLE Path

Advisories

FFmpeg through 9.0.2 Heap Buffer Overflow via PSD Decoder RLE Path

Severity: high
Date: 11/9/2026
Affecting: FFmpeg <= 9.0.2
CVE: CVE-2026-125213
CWE: CWE-197 Numeric Truncation Error
CVSS: 7.3
CVSS V4 Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25702
Patch Commit
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/psd.c#L450
https://github.com/FFmpeg/FFmpeg
Credit: Joshua Rogers (AISLE Research), Michael Niedermayer
Description: FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in the PSD decoder in libavcodec/psd.c that allows attackers to corrupt heap memory on 32-bit builds by supplying a crafted PSD image. Attackers can choose dimensions and channel counts whose product exceeds 4 GB, truncating the av_malloc allocation size so decode_rle() writes attacker-controlled data past the buffer, causing crashes or possible code execution.

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