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authorKacper Michajłow <kasper93@gmail.com>2024-06-27 02:40:35 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2024-08-05 23:17:46 +0200
commit5dfc0cc84129758b4eab2acdc3e186c3116deacd (patch)
treeb7cf0e0b9c32a4bc2468928ee91fd7f5bfb26bc7 /libavcodec
parent2b5f000d3f6f9e737e918a5438e6c881f65e70e2 (diff)
downloadffmpeg-5dfc0cc84129758b4eab2acdc3e186c3116deacd.tar.gz
avcodec/parser: ensure input padding is zeroed
Fixes use of uninitialized value, reported by MSAN. Found by OSS-Fuzz. Signed-off-by: Kacper Michajłow <kasper93@gmail.com> Fixes: 70852/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-5179190066872320 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/parser.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/parser.c b/libavcodec/parser.c
index af17ee9c15..426cc314fb 100644
--- a/libavcodec/parser.c
+++ b/libavcodec/parser.c
@@ -236,6 +236,7 @@ int ff_combine_frame(ParseContext *pc, int next,
}
pc->buffer = new_buffer;
memcpy(&pc->buffer[pc->index], *buf, *buf_size);
+ memset(&pc->buffer[pc->index + *buf_size], 0, AV_INPUT_BUFFER_PADDING_SIZE);
pc->index += *buf_size;
return -1;
}