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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-05 20:41:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-09 10:50:35 +0100 |
| commit | 6ee283d7d001cfcfec94a023e172bca731e96514 (patch) | |
| tree | 4d93ec21959d9edebbd1ee950c7fbbe642820afa | |
| parent | 5038933977d06d1048b41d71e0ada4d1ac536ddc (diff) | |
| download | ffmpeg-6ee283d7d001cfcfec94a023e172bca731e96514.tar.gz | |
avcodec/jpeglsdec: Increase range for N in ls_get_code_runterm() by using unsigned
Fixes: left shift of 32768 by 16 places cannot be represented in type 'int'
Fixes: Timeout
Fixes: 44219/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMVJPEG_fuzzer-4679455379947520
Fixes: 44088/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMVJPEG_fuzzer-4885976600674304
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/jpeglsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c index 269c71dc18..6ca723f797 100644 --- a/libavcodec/jpeglsdec.c +++ b/libavcodec/jpeglsdec.c @@ -191,7 +191,7 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, if (RItype) temp += state->N[Q] >> 1; - for (k = 0; (state->N[Q] << k) < temp; k++) + for (k = 0; ((unsigned)state->N[Q] << k) < temp; k++) ; #ifdef JLS_BROKEN |