CVE-2023-52794 thermal: intel: powerclamp: fix mismatch in get function for max_idle
A mismatch in the Intel powerclamp thermal driver causes a global out-of-bounds read, potentially leading to a kernel crash or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-52794?
CVE-2023-52794 is a high-severity memory corruption vulnerability in Linux kernel, published on 21 May 2024. 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:
thermal: intel: powerclamp: fix mismatch in get function for max_idle
KASAN reported this
[ 444.853098] BUG: KASAN: global-out-of-bounds in param_get_int+0x77/0x90 [ 444.853111] Read of size 4 at addr ffffffffc16c9220 by task cat/2105 ... [ 444.853442] The buggy address belongs to the variable: [ 444.853443] max_idle+0x0/0xffffffffffffcde0 [intel_powerclamp]
There is a mismatch between the param_get_int and the definition of max_idle. Replacing param_get_int with param_get_byte resolves this issue.
Weakness: CWE-125
Which versions are affected by CVE-2023-52794?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52794?
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-2023-52794 being exploited?
There is no known exploitation of CVE-2023-52794 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52794, DEBIAN-CVE-2023-52794, GHSA-frc8-7f65-3g5r, UBUNTU-CVE-2023-52794.