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| author | Zhang Shurong <zhang_shurong@foxmail.com> | 2023-06-24 19:16:49 +0300 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2023-06-24 22:55:11 +0300 |
| commit | c2d22806aecb24e2de55c30a06e5d6eb297d161d (patch) | |
| tree | 6430650d618a7f86bf428e942cb7bfbf3f1b1d3c /include | |
| parent | 29c171de52bcef23a7593a890cbcb6761be0123c (diff) | |
| download | linux-c2d22806aecb24e2de55c30a06e5d6eb297d161d.tar.xz | |
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 <zhang_shurong@foxmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions