ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Oct 19 01:15:53 2024 +0200| [7e020f21413269418180eea7933a94ecb6bf2ef8] | committer: Michael Niedermayer
avformat/dxa: check bpc Fixes: integer overflow: -2147483648 - 1 cannot be represented in type 'int' Fixes: 373971762/clusterfuzz-testcase-minimized-ffmpeg_dem_DXA_fuzzer-4880491112103936 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7e020f21413269418180eea7933a94ecb6bf2ef8 --- libavformat/dxa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/dxa.c b/libavformat/dxa.c index 813e665a27..56b19a7fca 100644 --- a/libavformat/dxa.c +++ b/libavformat/dxa.c @@ -120,6 +120,8 @@ static int dxa_read_header(AVFormatContext *s) avio_skip(pb, fsize); } c->bpc = (fsize + (int64_t)c->frames - 1) / c->frames; + if (c->bpc < 0) + return AVERROR_INVALIDDATA; if(ast->codecpar->block_align) { if (c->bpc > INT_MAX - ast->codecpar->block_align + 1) return AVERROR_INVALIDDATA; _______________________________________________ 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".
