CVE-2023-52794: thermal: intel: powerclamp: fix mismatch in get function for max_idle

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-21 · updated 2026-06-17
Weakness: CWE-125

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.

Affected products

Linux kernel: from 6.3 before 6.5.13; from 6.6 before 6.6.3 — fixed in 6.5.13, 6.6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.5.13, 6.6.3. Check the vendor advisory for mitigations.

References

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