ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu May 8 15:30:57 2025 +0200| [43926e026dd80918e1387801077c58cf02b6c99d] | committer: Michael Niedermayer
avcodec/mmvideo: fix palette index Fixes: 391935573/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MMVIDEO_fuzzer-4655048979709952 Fixes: out of array access Reviewed-by: Peter Ross <pr...@xvid.org> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=43926e026dd80918e1387801077c58cf02b6c99d --- libavcodec/mmvideo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mmvideo.c b/libavcodec/mmvideo.c index 7313507deb..2a0c855992 100644 --- a/libavcodec/mmvideo.c +++ b/libavcodec/mmvideo.c @@ -91,7 +91,7 @@ static void mm_decode_pal(MmContext *s) int start = bytestream2_get_le16(&s->gb); int count = bytestream2_get_le16(&s->gb); for (int i = 0; i < count; i++) - s->palette[start+i] = 0xFFU << 24 | (bytestream2_get_be24(&s->gb) << 2); + s->palette[(start+i)&0xFF] = 0xFFU << 24 | (bytestream2_get_be24(&s->gb) << 2); } /** _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
