ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Dec 12 23:50:27 2019 +0100| [a70d8363648fdd380df7f2ed39eaccf08d406e6a] | committer: Michael Niedermayer
avcodec/cbs_av1: Check leb128 values read "It is a requirement of bitstream conformance that the value returned from the leb128 parsing process is less than or equal to (1 << 32) - 1." Fixes: assertion failure Fixes: 19293/clusterfuzz-testcase-minimized-ffmpeg_BSF_TRACE_HEADERS_fuzzer-5749508361420800 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=a70d8363648fdd380df7f2ed39eaccf08d406e6a --- libavcodec/cbs_av1.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c index ab006f4d11..16eb7143b6 100644 --- a/libavcodec/cbs_av1.c +++ b/libavcodec/cbs_av1.c @@ -170,6 +170,9 @@ static int cbs_av1_read_leb128(CodedBitstreamContext *ctx, GetBitContext *gbc, break; } + if (value > UINT32_MAX) + return AVERROR_INVALIDDATA; + if (ctx->trace_enable) ff_cbs_trace_syntax_element(ctx, position, name, NULL, "", value); _______________________________________________ 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".
