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[FFmpeg-devel,3/3] avcodec/ttadata: Add sentinel at the end of ff_tta_shift_1

Message ID 20210608192941.15327-3-michael@niedermayer.cc
State Accepted
Commit dbbcfbcc4e4f0e91f814f2e13ced7b6d99069518
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Series [FFmpeg-devel,1/3] avformat/flvdec: Check data before casting
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Commit Message

Michael Niedermayer June 8, 2021, 7:29 p.m. UTC
Fixes: out of array access
Fixes: 34933/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TTA_fuzzer-5629322560929792

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/ttadata.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/libavcodec/ttadata.c b/libavcodec/ttadata.c
index bf793a4cc8..aa9f418a7d 100644
--- a/libavcodec/ttadata.c
+++ b/libavcodec/ttadata.c
@@ -30,7 +30,8 @@  const uint32_t ff_tta_shift_1[] = {
     0x01000000, 0x02000000, 0x04000000, 0x08000000,
     0x10000000, 0x20000000, 0x40000000, 0x80000000,
     0x80000000, 0x80000000, 0x80000000, 0x80000000,
-    0x80000000, 0x80000000, 0x80000000, 0x80000000
+    0x80000000, 0x80000000, 0x80000000, 0x80000000,
+    0xFFFFFFFF
 };
 
 const uint32_t * const ff_tta_shift_16 = ff_tta_shift_1 + 4;