CVE-2026-45909
kernel: Linux kernel `clk: mediatek`: Privilege escalation or arbitrary code execution via uninitialized pointer access.
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 27, 2026
Updated · August 20, 2026
Description
A flaw was found in the clk: mediatek component of the Linux kernel. The mtk_gate structs, which were previously marked for initialization-only use, are now accessed at runtime. This incorrect use of __initconst annotations could lead to an uninitialized pointer access. A local attacker with low privileges could exploit this vulnerability to cause a denial of service, disclose sensitive information, or potentially execute arbitrary code.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-824 · Access of Uninitialized Pointer