CVE-2022-50494

MEDIUM EPSS 4.3%
Published Oct 4, 20259mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 4, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 ]

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥3.9  –  <4.9.331
linuxlinux_kernel*≥4.10  –  <4.14.296
linuxlinux_kernel*≥4.15  –  <4.19.262
linuxlinux_kernel*≥4.20  –  <5.4.220
linuxlinux_kernel*≥5.5  –  <5.10.150
linuxlinux_kernel*≥5.11  –  <5.15.75
linuxlinux_kernel*≥5.16  –  <5.19.17
linuxlinux_kernel*≥6.0  –  <6.0.3

References 9

  • git.kernel.org https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0f91f66c568b316b19cb042cf50584467b3bdff4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e799e815097febbcb81b472285be824f5d089f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/418fae0700e85a498062424f8656435c32cdb200
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/513943bf879d45005213e6f5cfb7d9e9943f589f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5614908434451aafbf9b24cb5247cf1d21269f76
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a646c38f648185ee2c62f2a19da3c6f04e27612
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/68b99e94a4a2db6ba9b31fe0485e057b9354a640
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6904727db0eb62fb0c2dce1cf331c341d97ee4b7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e2a347b304224b2aeb1c0ea000d1cf8a02cc592
    Patch