CVE-2022-50494

thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash

Severity Score

4.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash When CPU 0 is offline and intel_powerclamp is used to inject
idle, it generates kernel BUG: BUG: using smp_processor_id() in preemptible [00000000] code: bash/15687
caller is debug_smp_processor_id+0x17/0x20
CPU: 4 PID: 15687 Comm: bash Not tainted 5.19.0-rc7+ #57
Call Trace:
<TASK>
dump_stack_lvl+0x49/0x63
dump_stack+0x10/0x16
check_preemption_disabled+0xdd/0xe0
debug_smp_processor_id+0x17/0x20
powerclamp_set_cur_state+0x7f/0xf9 [intel_powerclamp]
...
... Here CPU 0 is the control CPU by default and changed to the current CPU,
if CPU 0 offlined. This check has to be performed under cpus_read_lock(),
hence the above warning. Use get_cpu() instead of smp_processor_id() to avoid this BUG. [ rjw: Subject edits ]

In the Linux kernel, the following vulnerability has been resolved: thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash When CPU 0 is offline and intel_powerclamp is used to inject idle, it generates kernel BUG: BUG: using smp_processor_id() in preemptible [00000000] code: bash/15687 caller is debug_smp_processor_id+0x17/0x20 CPU: 4 PID: 15687 Comm: bash Not tainted 5.19.0-rc7+ #57 Call Trace: <TASK> dump_stack_lvl+0x49/0x63 dump_stack+0x10/0x16 check_preemption_disabled+0xdd/0xe0 debug_smp_processor_id+0x17/0x20 powerclamp_set_cur_state+0x7f/0xf9 [intel_powerclamp] ... ... Here CPU 0 is the control CPU by default and changed to the current CPU, if CPU 0 offlined. This check has to be performed under cpus_read_lock(), hence the above warning. Use get_cpu() instead of smp_processor_id() to avoid this BUG. [ rjw: Subject edits ]

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-10-04 CVE Reserved
2025-10-04 CVE Published
2025-10-06 CVE Updated
2025-10-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (11)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9	2022-10-26
https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4	2022-10-26
https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7	2022-10-26
https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612	2022-10-26
https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f	2022-10-26
https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76	2022-10-26
https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592	2022-10-24
https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200	2022-10-21
https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640	2022-09-21

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-50494	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=2401563	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.9.331 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.331"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.296 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.296"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.262 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.262"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.220 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.220"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.150 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.150"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.75 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.75"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.19.17 Search vendor "Linux" for product "Linux Kernel" and version " < 5.19.17"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.0.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.0.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1"		en		Affected