[FFmpeg-devel] [PATCH 2/2] avcodec/vvc/refs: Check content_ref in set_pict_type()

From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 2/2] avcodec/vvc/refs: Check content_ref in set_pict_type()
Date: Sun,  2 Feb 2025 22:17:21 +0100
Message-ID: <20250202211721.1469377-2-michael@niedermayer.cc> (raw)
In-Reply-To: <20250202211721.1469377-1-michael@niedermayer.cc>

Fixes: 390565846/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4990028521996288
Fixes: Null pointer dereference

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/vvc/refs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vvc/refs.c b/libavcodec/vvc/refs.c
index 486515d06db..1cfca482047 100644
--- a/libavcodec/vvc/refs.c
+++ b/libavcodec/vvc/refs.c
@@ -186,7 +186,7 @@ static void set_pict_type(AVFrame *frame, const VVCContext *s, const VVCFrameCon
         const CodedBitstreamFragment *current = &s->current_frame;
         for (int i = 0; i < current->nb_units && !has_b; i++) {
             const CodedBitstreamUnit *unit = current->units + i;
-            if (unit->type <= VVC_RSV_IRAP_11) {
+            if (unit->content_ref && unit->type <= VVC_RSV_IRAP_11) {
                 const H266RawSliceHeader *rsh = unit->content_ref;
                 has_inter |= !IS_I(rsh);
                 has_b     |= IS_B(rsh);
-- 
2.48.1

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
