High 7.8Published Jul 24, 2026

CVE-2026-64245fbdev: modedb: fix a possible UAF in fb_find_mode()

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 089d924d03d5c17b05d02992f57671ccfba1c4f0 before c7dc382439f7b019e207055b52e9cec051d42fa9; from 089d924d03d5c17b05d02992f57671ccfba1c4f0 before f906347d75c7fc377041c6d3c535d0f08846aada; 089d924d03d5c17b05d02992f57671ccfba1c4f0 builds before 4d418cf8daf57e454b4d855bf9b2419fd8e6a540; 089d924d03d5c17b05d02992f57671ccfba1c4f0 builds before 13b6f0cdd5cd5e60f682ec43134ab0e2024bd356; 089d924d03d5c17b05d02992f57671ccfba1c4f0 builds before 85b6256469cebdac395e7447147e06b2e151014f	CNA record
linux linux_kernel linux:linux_kernel	from 6.4 before 6.6.144; from 6.7 before 6.12.95; from 6.13 before 6.18.38; from 6.19 before 7.1.3	NVD

References

References

https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9	patch
https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada	patch
https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540	patch
https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356	patch
https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.