ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Fri Apr 5 00:20:33 2019 +0200| [2169a3f262beedcb06fdb0e0e5277a680570df13] | committer: Michael Niedermayer
avcodec/agm: Fix integer overflow with w/h Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Fixes: 13999/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5644405991538688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <one...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2169a3f262beedcb06fdb0e0e5277a680570df13 --- libavcodec/agm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavcodec/agm.c b/libavcodec/agm.c index 2d2092222d..cbd45e8095 100644 --- a/libavcodec/agm.c +++ b/libavcodec/agm.c @@ -535,11 +535,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, s->flags = 0; w = bytestream2_get_le32(gbyte); + h = bytestream2_get_le32(gbyte); + if (w == INT32_MIN || h == INT32_MIN) + return AVERROR_INVALIDDATA; if (w < 0) { w = -w; s->flags |= 2; } - h = bytestream2_get_le32(gbyte); if (h < 0) { h = -h; s->flags |= 1; _______________________________________________ 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".
