CVE-2025-38113

ACPI: CPPC: Fix NULL pointer dereference when nosmp is used

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Fix NULL pointer dereference when nosmp is used With nosmp in cmdline, other CPUs are not brought up, leaving their cpc_desc_ptr NULL. CPU0's iteration via for_each_possible_cpu() dereferences these NULL pointers, causing panic. Panic backtrace: [ 0.401123] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8 ... [ 0.403255] [<ffffffff809a5818>] cppc_allow_fast_switch+0x6a/0xd4 ... Kernel panic - not syncing: Attempted to kill init! [ rjw: New subject ]

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/356d09c7f5bf525086002a34f8bae40b134d1611
https://git.kernel.org/stable/c/c6dad167aade4bf0bef9130f2f149f4249fc4ad0
https://git.kernel.org/stable/c/32a48db4cf28ea087214c261da8476db218d08bd
https://git.kernel.org/stable/c/1a677d0ceb4a5d62117b711a8b2e0aee80d33015
https://git.kernel.org/stable/c/15eece6c5b05e5f9db0711978c3e3b7f1a2cfe12

Frequently Asked Questions

What is the severity of CVE-2025-38113?: CVE-2025-38113 has not yet been assigned a CVSS score.
How to fix CVE-2025-38113?: To fix CVE-2025-38113, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38113 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38113 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38113?: CVE-2025-38113 affects Linux Linux, Linux Linux.

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