diff options
| author | Zhang Shurong <[email protected]> | 2023-06-25 00:16:49 +0800 |
|---|---|---|
| committer | Helge Deller <[email protected]> | 2023-06-24 21:55:11 +0200 |
| commit | c2d22806aecb24e2de55c30a06e5d6eb297d161d (patch) | |
| tree | 6430650d618a7f86bf428e942cb7bfbf3f1b1d3c /lib/test_fortify/write_overflow-strlcpy-src.c | |
| parent | 29c171de52bcef23a7593a890cbcb6761be0123c (diff) | |
fbdev: fix potential OOB read in fast_imageblit()
There is a potential OOB read at fast_imageblit, for
"colortab[(*src >> 4)]" can become a negative value due to
"const char *s = image->data, *src".
This change makes sure the index for colortab always positive
or zero.
Similar commit:
https://patchwork.kernel.org/patch/11746067
Potential bug report:
https://groups.google.com/g/syzkaller-bugs/c/9ubBXKeKXf4/m/k-QXy4UgAAAJ
Signed-off-by: Zhang Shurong <[email protected]>
Cc: [email protected]
Signed-off-by: Helge Deller <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strlcpy-src.c')
0 files changed, 0 insertions, 0 deletions