ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Sep 16 23:36:29 2023 +0200| [515c0247a3062ca4639e457c81d2f58c504e9e8f] | committer: Michael Niedermayer
avcodec/apedec: Fix an integer overflow in predictor_update_filter() Fixes: signed integer overflow: -2147483506 + -801380 cannot be represented in type 'int' Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-6578985923117056 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=515c0247a3062ca4639e457c81d2f58c504e9e8f --- libavcodec/apedec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 62cb397490..8bfbb75b41 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -1220,7 +1220,7 @@ static av_always_inline int predictor_update_filter(APEPredictor64 *p, if (interim_mode < 1) { predictionA = (int32_t)predictionA; predictionB = (int32_t)predictionB; - p->lastA[filter] = decoded + ((int32_t)(predictionA + (predictionB >> 1)) >> 10); + p->lastA[filter] = (int32_t)(decoded + (unsigned)((int32_t)(predictionA + (predictionB >> 1)) >> 10)); } else { p->lastA[filter] = decoded + ((int64_t)((uint64_t)predictionA + (predictionB >> 1)) >> 10); } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
