CVE-2023-53424 clk: mediatek: fix of_iomap memory leak

What is CVE-2023-53424?

CVE-2023-53424 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Sep 2025. 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: fix of_iomap memory leak

Smatch reports: drivers/clk/mediatek/clk-mtk.c:583 mtk_clk_simple_probe() warn: 'base' from of_iomap() not released on lines: 496.

This problem was also found in linux-next. In mtk_clk_simple_probe(), base is not released when handling errors if clk_data is not existed, which may cause a leak. So free_base should be added here to release base.

Weakness: CWE-401

Which versions are affected by CVE-2023-53424?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53424?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-53424 being exploited?

There is no known exploitation of CVE-2023-53424 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 AZL-71918, BELL-CVE-2023-53424, DEBIAN-CVE-2023-53424, GHSA-hp7p-hw7m-prxm, ROOT-OS-DEBIAN-12-CVE-2023-53424, ROOT-OS-UBUNTU-2204-CVE-2023-53424 and 1 more.