The comments to the function say that it does not implement the spec and instead follows VTM. This patch is quite likely not the right solution and more intended to show the issue to people knowing the specific part of VTM ...
Fixes: signed integer overflow: 2147483392 + 256 cannot be represented in type 'int' Fixes: 60505/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6216675924770816 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vvc_parser.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/vvc_parser.c b/libavcodec/vvc_parser.c index 3951ebe50a..c661595e1e 100644 --- a/libavcodec/vvc_parser.c +++ b/libavcodec/vvc_parser.c @@ -225,10 +225,10 @@ static void get_slice_poc(VVCParserContext *s, int *poc, } else { if ((poc_lsb < prev_poc_lsb) && ((prev_poc_lsb - poc_lsb) >= (max_poc_lsb / 2))) - poc_msb = prev_poc_msb + max_poc_lsb; + poc_msb = prev_poc_msb + (unsigned)max_poc_lsb; else if ((poc_lsb > prev_poc_lsb) && ((poc_lsb - prev_poc_lsb) > (max_poc_lsb / 2))) - poc_msb = prev_poc_msb - max_poc_lsb; + poc_msb = prev_poc_msb - (unsigned)max_poc_lsb; else poc_msb = prev_poc_msb; } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
