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authorMichael Niedermayer <michael@niedermayer.cc>2020-10-23 20:29:50 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2020-10-26 09:10:49 +0100
commit343c3149ab3d77be76f035d3b18bb2b2da48ce1f (patch)
tree69673c95ef281eb641831f06f0d4f661782023bd /libavcodec
parent307a1b8e54841c7924aaa24ca400ce8129d64855 (diff)
downloadffmpeg-343c3149ab3d77be76f035d3b18bb2b2da48ce1f.tar.gz
avcodec/dirac_parser: do not offset AV_NOPTS_OFFSET
Fixes: signed integer overflow: -9223372036854775807 - 48000 cannot be represented in type 'long long' Fixes: 26521/clusterfuzz-testcase-minimized-ffmpeg_dem_DIRAC_fuzzer-5635536506847232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/dirac_parser.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dirac_parser.c b/libavcodec/dirac_parser.c
index fbc7414c79..8e68b4a9da 100644
--- a/libavcodec/dirac_parser.c
+++ b/libavcodec/dirac_parser.c
@@ -215,7 +215,7 @@ static int dirac_combine_frame(AVCodecParserContext *s, AVCodecContext *avctx,
int64_t pts = AV_RB32(cur_pu + 13);
if (s->last_pts == 0 && s->last_dts == 0)
s->dts = pts - 1;
- else
+ else if (s->last_dts != AV_NOPTS_VALUE)
s->dts = s->last_dts + 1;
s->pts = pts;
if (!avctx->has_b_frames && (cur_pu[4] & 0x03))