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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-11-18 19:04:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-21 01:55:10 +0200 |
| commit | 9980d388b96f5081ccf352cf8e5034d3b438fc52 (patch) | |
| tree | 45ef8077a1056186068a162f3e63c5bf3b86b77e | |
| parent | c4c1c28207e88d5e0f19849a1e02b0d279e79903 (diff) | |
| download | ffmpeg-9980d388b96f5081ccf352cf8e5034d3b438fc52.tar.gz | |
avformat/id3v2: Check taglen in read_uslt()
Fixes: Timeout (read mostly the same data repeatly)
Fixes: 52457/clusterfuzz-testcase-minimized-ffmpeg_dem_ALP_fuzzer-6610706313379840
Fixes: 53098/clusterfuzz-testcase-minimized-ffmpeg_dem_SOL_fuzzer-6481382981632000
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a798af91d7d1fc31cfc1ae09cc6ab3907304f44f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/id3v2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/id3v2.c b/libavformat/id3v2.c index 310d87b323..10431dfe55 100644 --- a/libavformat/id3v2.c +++ b/libavformat/id3v2.c @@ -377,10 +377,10 @@ static void read_uslt(AVFormatContext *s, AVIOContext *pb, int taglen, lang[3] = '\0'; taglen -= 3; - if (decode_str(s, pb, encoding, &descriptor, &taglen) < 0) + if (decode_str(s, pb, encoding, &descriptor, &taglen) < 0 || taglen < 0) goto error; - if (decode_str(s, pb, encoding, &text, &taglen) < 0) + if (decode_str(s, pb, encoding, &text, &taglen) < 0 || taglen < 0) goto error; // FFmpeg does not support hierarchical metadata, so concatenate the keys. |