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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-01-12 22:05:07 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-07 23:40:45 +0200 |
| commit | 0f6580b169f34486fdb57c2570023e88fb5d3e7d (patch) | |
| tree | 9bba6bc0c92a7acb95f494dd7e7ae11018ad4aa3 | |
| parent | 4c34976fea93716035270b7582179c12ce6d7013 (diff) | |
| download | ffmpeg-0f6580b169f34486fdb57c2570023e88fb5d3e7d.tar.gz | |
avcodec/xpmdec: Check size before allocation to avoid truncation
Fixes:OOM
Fixes:out of array access (no testcase)
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XPM_fuzzer-6573323838685184
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 95f0f84dae4f040d91f1e60dc5438612c58e8906)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/xpmdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/xpmdec.c b/libavcodec/xpmdec.c index 993873c595..6db95285ce 100644 --- a/libavcodec/xpmdec.c +++ b/libavcodec/xpmdec.c @@ -355,6 +355,9 @@ static int xpm_decode_frame(AVCodecContext *avctx, void *data, return AVERROR_INVALIDDATA; } + if (size > SIZE_MAX / 4) + return AVERROR(ENOMEM); + size *= 4; ptr += mod_strcspn(ptr, ",") + 1; |