forked from jengelh/ffmpeg-4
Jan Engelhardt
d1b279ea2a
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-4?expand=0&rev=220
31 lines
1.3 KiB
Diff
31 lines
1.3 KiB
Diff
commit e4d2666bdc3dbd177a81bbf428654a5f2fa3787a (20231224_CVE-2023-50010_e4d2666bdc3dbd177a81bbf428654a5f2fa3787a)
|
|
Author: Michael Niedermayer <michael@niedermayer.cc>
|
|
Date: Sun Dec 24 20:50:51 2023 +0100
|
|
References: CVE-2023-50010
|
|
References: https://bugzilla.opensuse.org/1172424
|
|
|
|
avfilter/vf_gradfun: Do not overread last line
|
|
|
|
The code works in steps of 2 lines and lacks support for odd height
|
|
Implementing odd height support is better but for now this fixes the
|
|
out of array access
|
|
|
|
Fixes: out of array access
|
|
Fixes: tickets/10702/poc6ffmpe
|
|
|
|
Found-by: Zeng Yunxiang
|
|
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
|
|
|
|
diff -Nura ffmpeg-4.4.4/libavfilter/vf_gradfun.c ffmpeg-4.4.4_new/libavfilter/vf_gradfun.c
|
|
--- ffmpeg-4.4.4/libavfilter/vf_gradfun.c 2023-04-13 02:01:50.000000000 +0800
|
|
+++ ffmpeg-4.4.4_new/libavfilter/vf_gradfun.c 2024-05-07 19:32:05.287848683 +0800
|
|
@@ -93,7 +93,7 @@
|
|
for (y = 0; y < r; y++)
|
|
ctx->blur_line(dc, buf + y * bstride, buf + (y - 1) * bstride, src + 2 * y * src_linesize, src_linesize, width / 2);
|
|
for (;;) {
|
|
- if (y < height - r) {
|
|
+ if (y + 1 < height - r) {
|
|
int mod = ((y + r) / 2) % r;
|
|
uint16_t *buf0 = buf + mod * bstride;
|
|
uint16_t *buf1 = buf + (mod ? mod - 1 : r - 1) * bstride;
|