CVE-2026-8461 Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder

An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg befor...

CVE-2026-8461 Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder

An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg befor...

CVE-2026-8461

The CVE-2026-8461 affects FFmpeg’s libavcodec/magicyuv.c in the MagicYUV decoder. It is a heap out-of-bounds write triggered by an odd slice_height, enabling denial-of-service and, in some cases, remote code execution. Affected software: FFmpeg prior to version 8.1.2; patched in 8.1.2 and later. ...

CVE-2026-8461: Out-of-bounds Write

An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg befor...

PT-2026-50667

Name of the Vulnerable Software and Affected Versions FFmpeg versions prior to 8.1.2 Description A heap out-of-bounds write flaw, dubbed PixelSmash, exists in the libavcodec library, specifically within the MagicYUV decoder. The issue stems from a rounding mismatch in the slice handling code wher...

ffmpeg:ffmpeg_AV_CODEC_ID_MAGICYUV_DEC_fuzzer: Heap-buffer-overflow in magy_decode_slice

Project: https://git.ffmpeg.org/ffmpeg.git https://github.com/FFmpeg/FFmpeg.git Detailed Report: https://oss-fuzz.com/testcase?key=4683933221715968 Project: ffmpeg Fuzzing Engine: afl Fuzz Target: ffmpegAVCODECIDMAGICYUVDECfuzzer Job Type: aflasanffmpeg Platform Id: linux Crash Type:...

ffmpeg:ffmpeg_AV_CODEC_ID_MAGICYUV_DEC_fuzzer: Use-of-uninitialized-value in add_left_pred_c

Project: https://git.ffmpeg.org/ffmpeg.git https://github.com/FFmpeg/FFmpeg.git Detailed Report: https://oss-fuzz.com/testcase?key=6465121960656896 Project: ffmpeg Fuzzing Engine: libFuzzer Fuzz Target: ffmpegAVCODECIDMAGICYUVDECfuzzer Job Type: libfuzzermsanffmpeg Platform Id: linux Crash Type:...

ffmpeg:ffmpeg_AV_CODEC_ID_MAGICYUV_fuzzer: Heap-buffer-overflow in magy_decode_slice

Project: https://git.ffmpeg.org/ffmpeg.git Detailed Report: https://oss-fuzz.com/testcase?key=5144552979431424 Project: ffmpeg Fuzzing Engine: honggfuzz Fuzz Target: ffmpegAVCODECIDMAGICYUVfuzzer Job Type: honggfuzzasanffmpeg Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 8 Crash...

ffmpeg:ffmpeg_AV_CODEC_ID_MAGICYUV_fuzzer: Heap-use-after-free in ff_init_vlc_multi_from_lengths

Project: https://git.ffmpeg.org/ffmpeg.git Detailed Report: https://oss-fuzz.com/testcase?key=4702814909366272 Project: ffmpeg Fuzzing Engine: afl Fuzz Target: ffmpegAVCODECIDMAGICYUVfuzzer Job Type: aflasanffmpeg Platform Id: linux Crash Type: Heap-use-after-free READ 1 Crash Address:...