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Git pushed a commit to branch master
in repository ffmpeg.
The following commit(s) were added to refs/heads/master by this push:
new b801f1fe6d avcodec/pdvdec: Check input space before buffer allocation
b801f1fe6d is described below
commit b801f1fe6d6c9b20d7010367c92860584f83d7f5
Author: Michael Niedermayer <[email protected]>
AuthorDate: Tue Feb 10 20:13:07 2026 +0100
Commit: michaelni <[email protected]>
CommitDate: Sun May 3 10:25:54 2026 +0000
avcodec/pdvdec: Check input space before buffer allocation
this rejects packets whose claimed decompressed frame would require a
deflate ratio beyond the format's theoretical 1032:1 limit
Fixes: Timeout
Fixes:
474457186/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PDV_fuzzer-5366108782919680
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
---
libavcodec/pdvdec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/pdvdec.c b/libavcodec/pdvdec.c
index fffc95a530..4eaa0ff30b 100644
--- a/libavcodec/pdvdec.c
+++ b/libavcodec/pdvdec.c
@@ -77,6 +77,9 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
return AVERROR_INVALIDDATA;
}
+ if (avpkt->size * 1032LL < ((avctx->width + 7) >> 3) * avctx->height)
//Asymptotic max compression of deflate
+ return AVERROR_INVALIDDATA;
+
if ((ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0)
return ret;
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