ffmpeg | branch: release/7.1 | Michael Niedermayer <mich...@niedermayer.cc> | Thu Dec 26 03:07:51 2024 +0100| [43eaca54bc88f86be84b3c7b276bd03a71a72653] | committer: Michael Niedermayer
avformat/ipmovie: Check signature_buffer read Fixes: use of uninitilaized data Fixes: 385167047/clusterfuzz-testcase-minimized-ffmpeg_dem_IPMOVIE_fuzzer-5941477505564672 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 788abe0d253b2034af15876d7889265d4746df2b) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=43eaca54bc88f86be84b3c7b276bd03a71a72653 --- libavformat/ipmovie.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c index 5d1748953a..3701be276f 100644 --- a/libavformat/ipmovie.c +++ b/libavformat/ipmovie.c @@ -614,7 +614,8 @@ static int ipmovie_read_header(AVFormatContext *s) ipmovie->avf = s; - avio_read(pb, signature_buffer, sizeof(signature_buffer)); + if (avio_read(pb, signature_buffer, sizeof(signature_buffer)) != sizeof(signature_buffer)) + return AVERROR_INVALIDDATA; while (memcmp(signature_buffer, signature, sizeof(signature))) { memmove(signature_buffer, signature_buffer + 1, sizeof(signature_buffer) - 1); signature_buffer[sizeof(signature_buffer) - 1] = avio_r8(pb); _______________________________________________ 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".
