From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/4] avcodec/dts2pts_bsf: Check ctx for NULL before ff_cbs_flush()
Date: Sat, 5 Nov 2022 21:16:26 +0100
Message-ID: <20221105201629.1980-1-michael@niedermayer.cc> (raw)
Fixes: null pointer dereference
Fixes: 52155/clusterfuzz-testcase-minimized-ffmpeg_BSF_DTS2PTS_fuzzer-5760107527143424
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/dts2pts_bsf.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/dts2pts_bsf.c b/libavcodec/dts2pts_bsf.c
index bf20b1ec8a..8142562d2c 100644
--- a/libavcodec/dts2pts_bsf.c
+++ b/libavcodec/dts2pts_bsf.c
@@ -505,7 +505,8 @@ static void dts2pts_flush(AVBSFContext *ctx)
s->root = NULL;
ff_cbs_fragment_reset(&s->au);
- ff_cbs_flush(s->cbc);
+ if (s->cbc)
+ ff_cbs_flush(s->cbc);
}
static void dts2pts_close(AVBSFContext *ctx)
--
2.17.1
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next reply other threads:[~2022-11-05 20:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-05 20:16 Michael Niedermayer [this message]
2022-11-05 20:16 ` [FFmpeg-devel] [PATCH 2/4] avcodec/bonk: decode multiple passes in intlist_read() at once Michael Niedermayer
2022-11-05 20:16 ` [FFmpeg-devel] [PATCH 3/4] avcodec/bonk: Check unquant for overflow Michael Niedermayer
2022-11-06 8:51 ` Paul B Mahol
2022-11-06 12:29 ` Michael Niedermayer
2022-11-05 20:16 ` [FFmpeg-devel] [PATCH 4/4] avcodec/bonk: Check for undefined overflow in predictor_calc_error() Michael Niedermayer
2022-11-06 8:50 ` Paul B Mahol
2022-11-06 12:30 ` Michael Niedermayer
2022-11-06 22:38 ` [FFmpeg-devel] [PATCH 1/4] avcodec/dts2pts_bsf: Check ctx for NULL before ff_cbs_flush() James Almer
2022-11-09 22:03 ` Michael Niedermayer
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