RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avcodec/hevc_filter: copy_CTB() only within width&height 

Fixes: out of array access
Fixes: 49271/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5424984922652672

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 009ef35d38)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-07-22 00:51:32 +02:00
parent 1654bac49e
commit 3a41f58c94
No known key found for this signature in database
GPG Key ID: B18E8928B3948D64
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libavcodec/hevc_filter.c
View File

@ -145,11 +145,22 @@ int i, j;
if (((intptr_t)dst | (intptr_t)src | stride_dst | stride_src) & 15) {
for (i = 0; i < height; i++) {
for (j = 0; j < width; j+=8)
for (j = 0; j < width - 7; j+=8)
AV_COPY64U(dst+j, src+j);
dst += stride_dst;
src += stride_src;
}
if (width&7) {
dst += ((width>>3)<<3) - stride_dst * height;
src += ((width>>3)<<3) - stride_src * height;
width &= 7;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++)
dst[j] = src[j];
dst += stride_dst;
src += stride_src;
}
}
} else {
for (i = 0; i < height; i++) {
for (j = 0; j < width; j+=16)