CVEvulnerability
CVE-2026-64245
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-24
- Last modified
- 2026-08-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
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.
Affected configurations
• linux linux kernel (>= 6.4 < 6.6.144)
• linux linux kernel (>= 6.7 < 6.12.95)
• linux linux kernel (>= 6.13 < 6.18.38)
• linux linux kernel (>= 6.19 < 7.1.3)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356 Patch
- https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540 Patch
- https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f Patch
- https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9 Patch
- https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada Patch