FKIE_CVE-2025-38610

Vulnerability from fkie_nvd - Published: 2025-08-19 17:15 - Updated: 2026-01-07 18:22
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 ]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27914f2b795e2b58e9506f281dcdd98fef09d3c2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27e0318f0ea69fcfa32228847debc384ade14578Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2fd001a0075ac01dc64a28a8e21226b3d989a91dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46dc57406887dd02565cb264224194a6776d882bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8374ac7d69a57d737e701a851ffe980a0d27d3adPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6ec27091cf5ac05094c1fe3a6ce914cf711a37cPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 11.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw()\n\nThe get_pd_power_uw() function can crash with a NULL pointer dereference\nwhen em_cpu_get() returns NULL. This occurs when a CPU becomes impossible\nduring runtime, causing get_cpu_device() to return NULL, which propagates\nthrough em_cpu_get() and leads to a crash when em_span_cpus() dereferences\nthe NULL pointer.\n\nAdd a NULL check after em_cpu_get() and return 0 if unavailable,\nmatching the existing fallback behavior in __dtpm_cpu_setup().\n\n[ rjw: Drop an excess empty code line ]"
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  "lastModified": "2026-01-07T18:22:17.907",
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