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new b740b85872 avformat/yuv4mpegen: Sanity check input packet frame
dimensions
b740b85872 is described below
commit b740b8587261ce13919634687fe9e250519716df
Author: Michael Niedermayer <[email protected]>
AuthorDate: Fri Jan 23 02:09:02 2026 +0100
Commit: Michael Niedermayer <[email protected]>
CommitDate: Tue Feb 10 00:40:52 2026 +0100
avformat/yuv4mpegen: Sanity check input packet frame dimensions
Fixes: out of array access if a filter-graph is used the injects changing
dimensions
Found-by: Zhenpeng (Leo) Lin from depthfirst
Signed-off-by: Michael Niedermayer <[email protected]>
---
libavformat/yuv4mpegenc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/yuv4mpegenc.c b/libavformat/yuv4mpegenc.c
index 371d3745c1..493ddd1e38 100644
--- a/libavformat/yuv4mpegenc.c
+++ b/libavformat/yuv4mpegenc.c
@@ -197,6 +197,9 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket
*pkt)
width = st->codecpar->width;
height = st->codecpar->height;
+ if (frame->width != width || frame->height != height)
+ return AVERROR(EINVAL);
+
desc = av_pix_fmt_desc_get(st->codecpar->format);
/* The following code presumes all planes to be non-interleaved. */
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