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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-10 02:37:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-14 22:00:17 +0200 |
| commit | ca09d8a0dcd82e3128e62463231296aaf63ae6f7 (patch) | |
| tree | d36e07bcfffe25db7033993d2caaafbeb3cbe4f4 | |
| parent | d2e8974699a9e35cc1a926bf74a972300d629cd5 (diff) | |
| download | ffmpeg-ca09d8a0dcd82e3128e62463231296aaf63ae6f7.tar.gz | |
avcodec/jpegxl_parser: Check for ctx->skip overflow
Fixes: out of array access
Fixes: 62113/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5025082076168192
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpegxl_parser.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpegxl_parser.c b/libavcodec/jpegxl_parser.c index 4010bc713a..6656ed35c5 100644 --- a/libavcodec/jpegxl_parser.c +++ b/libavcodec/jpegxl_parser.c @@ -1326,7 +1326,7 @@ static int skip_boxes(JXLParseContext *ctx, const uint8_t *buf, int buf_size) if (!size) return AVERROR_INVALIDDATA; /* invalid ISOBMFF size */ - if (size <= head_size + 4) + if (size <= head_size + 4 || size > INT_MAX - ctx->skip) return AVERROR_INVALIDDATA; ctx->skip += size; |