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[FFmpeg-devel,2/4] avcodec/parser: ensure input padding is zeroed

Message ID 20240627004037.1336-2-kasper93@gmail.com
State New
Headers show
Series [FFmpeg-devel,1/4] avcodec/jpegxl_parser: ensure input padding is zeroed | expand

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Commit Message

Kacper Michajlow June 27, 2024, 12:40 a.m. UTC 
Fixes use of uninitialized value, reported by MSAN.

Found by OSS-Fuzz.

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
---
 libavcodec/parser.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

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;
     }