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commit e6bc28002119d6438088bf2f68d13ba2a90ab2b1 Author: Michael Niedermayer <[email protected]> AuthorDate: Fri Jan 23 00:34:56 2026 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Mon May 4 17:13:17 2026 +0200 avformat/img2enc: Check split planes packet size Fixes: out of array read Fixes: VULN-6/poc.raw Found-by: Zhenpeng (Leo) Lin from depthfirst Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit ca1c1f29ce47e47e5cd1eff9fc9d2622b7a1eb0d) Signed-off-by: Michael Niedermayer <[email protected]> --- libavformat/img2enc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c index 526a11e5ee..c9a7e1bec8 100644 --- a/libavformat/img2enc.c +++ b/libavformat/img2enc.c @@ -207,6 +207,11 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt) ysize *= 2; usize *= 2; } + if (ysize + 2*usize + (desc->nb_components > 3) * ysize > pkt->size) { + ret = AVERROR(EINVAL); + goto fail; + } + if ((ret = write_and_close(s, &pb[0], pkt->data , ysize)) < 0 || (ret = write_and_close(s, &pb[1], pkt->data + ysize , usize)) < 0 || (ret = write_and_close(s, &pb[2], pkt->data + ysize + usize, usize)) < 0) _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
