This is an automated email from the git hooks/post-receive script.
Git pushed a commit to branch master
in repository ffmpeg.
The following commit(s) were added to refs/heads/master by this push:
new 4446dfb0e3 avcodec/flashsv: Check for input space before
(re)allocating frame
4446dfb0e3 is described below
commit 4446dfb0e326fcc6228476d1efeb9cdaea088702
Author: Michael Niedermayer <[email protected]>
AuthorDate: Tue Feb 10 02:37:58 2026 +0100
Commit: Michael Niedermayer <[email protected]>
CommitDate: Mon Feb 23 22:59:44 2026 +0100
avcodec/flashsv: Check for input space before (re)allocating frame
Fixes: Timeout
Fixes:
471605680/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLASHSV2_DEC_fuzzer-6210773459468288
Fixes:
471605920/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLASHSV_DEC_fuzzer-6230719287590912
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
---
libavcodec/flashsv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/flashsv.c b/libavcodec/flashsv.c
index d27918c923..ba5c995006 100644
--- a/libavcodec/flashsv.c
+++ b/libavcodec/flashsv.c
@@ -314,6 +314,9 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
AVFrame *rframe,
v_blocks = s->image_height / s->block_height;
v_part = s->image_height % s->block_height;
+ if (h_blocks * v_blocks * 16 > get_bits_left(&gb))
+ return AVERROR_INVALIDDATA;
+
/* the block size could change between frames, make sure the buffer
* is large enough, if not, get a larger one */
if (s->block_size < s->block_width * s->block_height) {
_______________________________________________
ffmpeg-cvslog mailing list -- [email protected]
To unsubscribe send an email to [email protected]
