CVE-2024-26975

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1488ac990ac886b1209aa9f94c0c66022bcc8827 < 0641908b906a133f1494c312a71f9fecbe2b6c78affected
LinuxLinux1488ac990ac886b1209aa9f94c0c66022bcc8827 < 9b254feb249981b66ccdb1dae54e757789a15ba1affected
LinuxLinux1488ac990ac886b1209aa9f94c0c66022bcc8827 < 2f73cf2ae5e0f4e629db5be3a4380ff7807148e6affected
LinuxLinux1488ac990ac886b1209aa9f94c0c66022bcc8827 < 2d1f5006ff95770da502f8cee2a224a1ff83866eaffected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux6.6.24 <= 6.6.*unaffected
LinuxLinux6.7.12 <= 6.7.*unaffected
LinuxLinux6.8.3 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References