CVE-2026-64245
Description
In the Linux kernel, the following vulnerability has been resolved:
fbdev: modedb: fix a possible UAF in fb_find_mode()
If mode_option is NULL, it is assigned from mode_option_buf:
if (!mode_option) {
fb_get_options(NULL, &mode_option_buf);
mode_option = mode_option_buf;
}
Later, name is assigned from mode_option:
const char *name = mode_option;
However, mode_option_buf is freed before name is no longer used:
kfree(mode_option_buf);
while name is still accessed by:
if ((name_matches(db[i], name, namelen) ||
Since name aliases mode_option_buf, this may result in a
use-after-free.
Fix this by extending the lifetime of mode_option_buf until the end of the
function by using scope-based resource management for cleanup.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c7dc382439f7b019e207055b52e9cec051d42fa9, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f906347d75c7fc377041c6d3c535d0f08846aada, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4d418cf8daf57e454b4d855bf9b2419fd8e6a540, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 13b6f0cdd5cd5e60f682ec43134ab0e2024bd356 … |
| Linux | Linux | — | 6.6.144 ≤ 6.6.*, 6.12.95 ≤ 6.12.*, 6.18.38 ≤ 6.18.*, 7.1.3 ≤ 7.1.* … |
References (5)
- https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9
- https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada
- https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540
- https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356
- https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f