CVE-2025-38610

Summary

In the Linux kernel, the following vulnerability has been resolved:

powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw()

The get_pd_power_uw() function can crash with a NULL pointer dereference when em_cpu_get() returns NULL. This occurs when a CPU becomes impossible during runtime, causing get_cpu_device() to return NULL, which propagates through em_cpu_get() and leads to a crash when em_span_cpus() dereferences the NULL pointer.

Add a NULL check after em_cpu_get() and return 0 if unavailable, matching the existing fallback behavior in __dtpm_cpu_setup().

[ rjw: Drop an excess empty code line ]

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < 27914f2b795e2b58e9506f281dcdd98fef09d3c2affected
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < c6ec27091cf5ac05094c1fe3a6ce914cf711a37caffected
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < 8374ac7d69a57d737e701a851ffe980a0d27d3adaffected
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < 27e0318f0ea69fcfa32228847debc384ade14578affected
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < 2fd001a0075ac01dc64a28a8e21226b3d989a91daffected
LinuxLinuxeb82bace893169b319c563b7f813c58a0a5a9f76 < 46dc57406887dd02565cb264224194a6776d882baffected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.1.148 <= 6.1.*unaffected
LinuxLinux6.6.102 <= 6.6.*unaffected
LinuxLinux6.12.42 <= 6.12.*unaffected
LinuxLinux6.15.10 <= 6.15.*unaffected
LinuxLinux6.16.1 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References