CVE-2025-38610

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

State: Published
Severity: Not scored
Published: Aug 19, 2025
Updated: May 11, 2026
Reserved: Apr 16, 2025

Description

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 ]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	eb82bace893169b319c563b7f813c58a0a5a9f76 to before 27914f2b795e2b58e9506f281dcdd98fef09d3c2Affected eb82bace893169b319c563b7f813c58a0a5a9f76 to before c6ec27091cf5ac05094c1fe3a6ce914cf711a37cAffected eb82bace893169b319c563b7f813c58a0a5a9f76 to before 8374ac7d69a57d737e701a851ffe980a0d27d3adAffected eb82bace893169b319c563b7f813c58a0a5a9f76 to before 27e0318f0ea69fcfa32228847debc384ade14578Affected eb82bace893169b319c563b7f813c58a0a5a9f76 to before 2fd001a0075ac01dc64a28a8e21226b3d989a91dAffected eb82bace893169b319c563b7f813c58a0a5a9f76 to before 46dc57406887dd02565cb264224194a6776d882bAffected
LinuxLinux	5.16Affected before 5.16Not affected 6.1.148 through 6.1.Not affected 6.6.102 through 6.6.Not affected 6.12.42 through 6.12.Not affected 6.15.10 through 6.15.Not affected 6.16.1 through 6.16.*Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

eb82bace893169b319c563b7f813c58a0a5a9f76 to before 27914f2b795e2b58e9506f281dcdd98fef09d3c2Affected
eb82bace893169b319c563b7f813c58a0a5a9f76 to before c6ec27091cf5ac05094c1fe3a6ce914cf711a37cAffected
eb82bace893169b319c563b7f813c58a0a5a9f76 to before 8374ac7d69a57d737e701a851ffe980a0d27d3adAffected
eb82bace893169b319c563b7f813c58a0a5a9f76 to before 27e0318f0ea69fcfa32228847debc384ade14578Affected
eb82bace893169b319c563b7f813c58a0a5a9f76 to before 2fd001a0075ac01dc64a28a8e21226b3d989a91dAffected
eb82bace893169b319c563b7f813c58a0a5a9f76 to before 46dc57406887dd02565cb264224194a6776d882bAffected

LinuxLinux

5.16Affected
before 5.16Not affected
6.1.148 through 6.1.*Not affected
6.6.102 through 6.6.*Not affected
6.12.42 through 6.12.*Not affected
6.15.10 through 6.15.*Not affected
6.16.1 through 6.16.*Not affected
6.17 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.