CVE-2026-45909 clk: mediatek: Drop __initconst from gates

What is CVE-2026-45909?

CVE-2026-45909 is a high-severity vulnerability in Linux kernel, published on 27 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

clk: mediatek: Drop __initconst from gates

Since commit 8ceff24a754a ("clk: mediatek: clk-gate: Refactor mtk_clk_register_gate to use mtk_gate struct") the mtk_gate structs are no longer just used for initialization/registration, but also at runtime. So drop __initconst annotations.

Which versions are affected by CVE-2026-45909?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-45909?

Apply the vendor's patch.

Is CVE-2026-45909 being exploited?

There is no known exploitation of CVE-2026-45909 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-45909, DEBIAN-CVE-2026-45909, GHSA-x3cq-3vgp-fhqq, UBUNTU-CVE-2026-45909.