ffmpeg | branch: release/2.8 | Michael Niedermayer <[email protected]> | Sat Sep 17 23:15:56 2022 +0200| [1ccd4a9eacdd9b78ba9d925e2502fbedeaa7d93c] | committer: Michael Niedermayer
avformat/icodec: Check nb_pal Fixes: signed integer overflow: 538976288 * 4 cannot be represented in type 'int' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ICO_fuzzer-6690068904935424 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <[email protected]> Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit db73ae0dc114aa6fae08e69f977944f056a24995) Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1ccd4a9eacdd9b78ba9d925e2502fbedeaa7d93c --- libavformat/icodec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/icodec.c b/libavformat/icodec.c index 9320862b9b..ec58abe343 100644 --- a/libavformat/icodec.c +++ b/libavformat/icodec.c @@ -172,6 +172,9 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt) AV_WL32(buf + 32, image->nb_pal); } + if (image->nb_pal > INT_MAX / 4 - 14 - 40) + return AVERROR_INVALIDDATA; + AV_WL32(buf - 4, 14 + 40 + image->nb_pal * 4); AV_WL32(buf + 8, AV_RL32(buf + 8) / 2); } _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
