ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Jun 21 22:15:47 2021 +0200| [7b5308045e16954e2bf9b5b51516d98a53872101] | committer: Michael Niedermayer
avcodec/exr: Better size checks Fixes: signed integer overflow: 3530839700044513368 + 8386093932303352321 cannot be represented in type 'long long' Fixes: 35182/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5398383270428672 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 18b0dd07384b2987f24a4d0ba7600fde2787472a) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7b5308045e16954e2bf9b5b51516d98a53872101 --- libavcodec/exr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 83e8a58e27..27c243c12c 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1014,7 +1014,7 @@ static int dwa_uncompress(EXRContext *s, const uint8_t *src, int compressed_size dc_count = AV_RL64(src + 72); ac_compression = AV_RL64(src + 80); - if (compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize) + if (compressed_size < (uint64_t)(lo_size | ac_size | dc_size | rle_csize) || compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize) return AVERROR_INVALIDDATA; bytestream2_init(&gb, src + 88, compressed_size - 88); _______________________________________________ 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".
