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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-02 20:07:13 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-14 23:29:51 +0100 |
| commit | 8a3fea802a3e4274dbe084d372ec8aeab3932b3e (patch) | |
| tree | 46bb38977bd31dcdacfc1124b06e4ea1cc1a2a97 | |
| parent | 337984c13327bc67e1e9e3e9bfd743cfbfbc42f8 (diff) | |
| download | ffmpeg-8a3fea802a3e4274dbe084d372ec8aeab3932b3e.tar.gz | |
avcodec/jpegls: Check A[Q] for overflow in ff_jpegls_update_state_regular()
Fixes: Timeout
Fixes: 30912/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MJPEG_fuzzer-5556235476795392
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/jpegls.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpegls.h b/libavcodec/jpegls.h index 16372bd39d..aac67bbe31 100644 --- a/libavcodec/jpegls.h +++ b/libavcodec/jpegls.h @@ -95,7 +95,7 @@ static inline void ff_jpegls_downscale_state(JLSState *state, int Q) static inline int ff_jpegls_update_state_regular(JLSState *state, int Q, int err) { - if(FFABS(err) > 0xFFFF) + if(FFABS(err) > 0xFFFF || FFABS(err) > INT_MAX - state->A[Q]) return -0x10000; state->A[Q] += FFABS(err); err *= state->twonear; |