CVE-2023-53725 clocksource/drivers/cadence-ttc: Fix memory leak in ttc_timer_probe
A memory leak in the Cadence TTC timer driver can lead to resource exhaustion and denial of service in the Linux kernel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-53725?
CVE-2023-53725 is a memory corruption vulnerability in Linux, published on 22 Oct 2025.
Official description
In the Linux kernel, the following vulnerability has been resolved:
clocksource/drivers/cadence-ttc: Fix memory leak in ttc_timer_probe
Smatch reports: drivers/clocksource/timer-cadence-ttc.c:529 ttc_timer_probe() warn: 'timer_baseaddr' from of_iomap() not released on lines: 498,508,516.
timer_baseaddr may have the problem of not being released after use, I replaced it with the devm_of_iomap() function and added the clk_put() function to cleanup the "clk_ce" and "clk_cs".
Which versions are affected by CVE-2023-53725?
How do I fix CVE-2023-53725?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-53725 being exploited?
There is no known exploitation of CVE-2023-53725 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-53725, DEBIAN-CVE-2023-53725, GHSA-2gf7-3qxp-c9rr, UBUNTU-CVE-2023-53725.