ffmpeg | branch: release/4.3 | Michael Niedermayer <mich...@niedermayer.cc> | Fri Aug 16 16:00:01 2024 +0200| [daa0d94cf9965f4137d2e3c0492c62849888f806] | committer: Michael Niedermayer
avcodec/webp: Check ref_x/y Fixes: 70991/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WEBP_fuzzer-5544067620995072 Fixes: use of uninintailized value Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 7c1e732ad2e240af5afe9ffea443c91bb233aa65) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=daa0d94cf9965f4137d2e3c0492c62849888f806 --- libavcodec/webp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/webp.c b/libavcodec/webp.c index ae16b85f46..3a9cedd47f 100644 --- a/libavcodec/webp.c +++ b/libavcodec/webp.c @@ -739,6 +739,9 @@ static int decode_entropy_coded_image(WebPContext *s, enum ImageRole role, ref_x = FFMAX(0, ref_x); ref_y = FFMAX(0, ref_y); + if (ref_y == y && ref_x >= x) + return AVERROR_INVALIDDATA; + /* copy pixels * source and dest regions can overlap and wrap lines, so just * copy per-pixel */ _______________________________________________ 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".
