Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.4, < 6.6.144 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356Patch
- https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540Patch
- https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014fPatch
- https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9Patch
- https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aadaPatch
FAQ
What is CVE-2026-64245?
CVE-2026-64245 is a vulnerability with a CVSS score of 7.8 (HIGH). 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_opti...
How severe is CVE-2026-64245?
CVE-2026-64245 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64245?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.