CVE-2024-26975

powercap: intel_rapl: Fix a NULL pointer dereference

Description

In the Linux kernel, the following vulnerability has been resolved: powercap: intel_rapl: Fix a NULL pointer dereference A NULL pointer dereference is triggered when probing the MMIO RAPL driver on platforms with CPU ID not listed in intel_rapl_common CPU model list. This is because the intel_rapl_common module still probes on such platforms even if 'defaults_msr' is not set after commit 1488ac990ac8 ("powercap: intel_rapl: Allow probing without CPUID match"). Thus the MMIO RAPL rp->priv->defaults is NULL when registering to RAPL framework. Fix the problem by adding sanity check to ensure rp->priv->rapl_defaults is always valid.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/0641908b906a133f1494c312a71f9fecbe2b6c78 patch
https://git.kernel.org/stable/c/9b254feb249981b66ccdb1dae54e757789a15ba1 patch
https://git.kernel.org/stable/c/2f73cf2ae5e0f4e629db5be3a4380ff7807148e6 patch
https://git.kernel.org/stable/c/2d1f5006ff95770da502f8cee2a224a1ff83866e patch

Frequently Asked Questions

What is the severity of CVE-2024-26975?
CVE-2024-26975 has been scored as a medium severity vulnerability.
How to fix CVE-2024-26975?
To fix CVE-2024-26975, 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-2024-26975 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-26975 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-2024-26975?
CVE-2024-26975 affects Linux Linux, Linux Linux.
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