From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 2/4] avcodec/cbs: Check ctx for NULL in ff_cbs_flush()
Date: Sat, 29 Oct 2022 21:13:51 +0200
Message-ID: <20221029191353.2973-2-michael@niedermayer.cc> (raw)
In-Reply-To: <20221029191353.2973-1-michael@niedermayer.cc>
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/cbs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/cbs.c b/libavcodec/cbs.c
index 504197e06d..9d59403f13 100644
--- a/libavcodec/cbs.c
+++ b/libavcodec/cbs.c
@@ -120,7 +120,7 @@ av_cold int ff_cbs_init(CodedBitstreamContext **ctx_ptr,
av_cold void ff_cbs_flush(CodedBitstreamContext *ctx)
{
- if (ctx->codec->flush)
+ if (ctx && ctx->codec->flush)
ctx->codec->flush(ctx);
}
--
2.17.1
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next prev parent reply other threads:[~2022-10-29 19:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-29 19:13 [FFmpeg-devel] [PATCH 1/4] avformat/replaygain: avoid undefined / negative abs Michael Niedermayer
2022-10-29 19:13 ` Michael Niedermayer [this message]
2022-10-29 19:32 ` [FFmpeg-devel] [PATCH 2/4] avcodec/cbs: Check ctx for NULL in ff_cbs_flush() Andreas Rheinhardt
2022-10-29 19:13 ` [FFmpeg-devel] [PATCH 3/4] avcodec/alsdec: The minimal block is at least 7 bits Michael Niedermayer
2022-11-04 21:49 ` Michael Niedermayer
2022-10-29 19:13 ` [FFmpeg-devel] [PATCH 4/4] avcodec/alsdec: Check bits left before block decoding in non multi channel coding loop Michael Niedermayer
2022-11-04 21:50 ` Michael Niedermayer
2022-11-04 21:48 ` [FFmpeg-devel] [PATCH 1/4] avformat/replaygain: avoid undefined / negative abs Michael Niedermayer
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