5.5

CVE-2025-38610

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

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 ]
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.148
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.102
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.42
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.10
Linux ≫ Linux Kernel Version >= 6.16 < 6.16.1
Debian ≫ Debian Linux Version11.0
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.041
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/27914f2b795e2b58e9506f281dcdd98fef09d3c2
Patch
https://git.kernel.org/stable/c/27e0318f0ea69fcfa32228847debc384ade14578
Patch
https://git.kernel.org/stable/c/2fd001a0075ac01dc64a28a8e21226b3d989a91d
Patch
https://git.kernel.org/stable/c/46dc57406887dd02565cb264224194a6776d882b
Patch
https://git.kernel.org/stable/c/8374ac7d69a57d737e701a851ffe980a0d27d3ad
Patch
https://git.kernel.org/stable/c/c6ec27091cf5ac05094c1fe3a6ce914cf711a37c
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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