ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jul 23 21:25:37 2025 +0200| [a45755e302baf56461bd7d8cf0c3a88c0ee5e83f] | committer: Michael Niedermayer
avcodec/dxvenc: Clear width to linesize not linesize to linesize Fixes: use of uninitialized memory Fixes: 422217206/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-4786889444098048 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a45755e302baf56461bd7d8cf0c3a88c0ee5e83f --- libavcodec/dxvenc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/dxvenc.c b/libavcodec/dxvenc.c index f5cef4f2e1..0a2dd8077b 100644 --- a/libavcodec/dxvenc.c +++ b/libavcodec/dxvenc.c @@ -197,8 +197,9 @@ static int dxv_encode(AVCodecContext *avctx, AVPacket *pkt, avctx->height); if (avctx->width != DXV_ALIGN(avctx->width)) { + av_assert0(frame->format == AV_PIX_FMT_RGBA); for (int y = 0; y < avctx->height; y++) { - memset(safe_data[0] + y * safe_linesize[0] + frame->linesize[0], 0, safe_linesize[0] - frame->linesize[0]); + memset(safe_data[0] + y * safe_linesize[0] + 4*avctx->width, 0, safe_linesize[0] - 4*avctx->width); } } if (avctx->height != DXV_ALIGN(avctx->height)) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
