From: James Almer <jamrial@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH] avcodec/ffv1dec: don't add offsets to NULL pointers
Date: Sun, 13 Jul 2025 19:57:18 -0300
Message-ID: <20250713225718.8346-1-jamrial@gmail.com> (raw)
Fixes: libavcodec/ffv1dec.c:452:43: runtime error: applying zero offset to null pointer
Signed-off-by: James Almer <jamrial@gmail.com>
---
libavcodec/ffv1dec.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 8d10d2cf8b..d613aa5395 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -444,14 +444,16 @@ static int decode_slice(AVCodecContext *c, void *arg)
} else if (f->use32bit) {
uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
p->data[1] + ps * x + y * p->linesize[1],
- p->data[2] + ps * x + y * p->linesize[2],
- p->data[3] + ps * x + y * p->linesize[3] };
+ p->data[2] + ps * x + y * p->linesize[2] };
+ if (f->transparency)
+ planes[3] = p->data[3] + ps * x + y * p->linesize[3];
decode_rgb_frame32(f, sc, &gb, planes, width, height, p->linesize);
} else {
uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
p->data[1] + ps * x + y * p->linesize[1],
- p->data[2] + ps * x + y * p->linesize[2],
- p->data[3] + ps * x + y * p->linesize[3] };
+ p->data[2] + ps * x + y * p->linesize[2] };
+ if (f->transparency)
+ planes[3] = p->data[3] + ps * x + y * p->linesize[3];
decode_rgb_frame(f, sc, &gb, planes, width, height, p->linesize);
}
if (ac != AC_GOLOMB_RICE && f->version > 2) {
--
2.50.1
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