CVE-2022-50318

Service interruption via leaked PCI device reference

Published Sep 15, 2025 · Updated Sep 15, 2025

Reference-count leak in the perf Intel uncore component of the Linux kernel allows local users to cause a service interruption. The hswep_has_limit_sbox() function obtains an Intel PCI device with pci_get_device() but fails to release the reference after pci_read_config_dword(). Exploitation requires local low-privileged access and affected Intel Haswell-EP uncore hardware; the reported consequence is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leak in the perf Intel uncore component of the Linux kernel allows local users to cause a service interruption. The hswep_has_limit_sbox() function obtains an Intel PCI device with pci_get_device() but fails to release the reference after pci_read_config_dword(). Exploitation requires local low-privileged access and affected Intel Haswell-EP uncore hardware; the reported consequence is limited to availability.

The record

CVE
CVE-2022-50318
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=319a06e58ed7f1443f7133c05513de470f90628d <e293263248f25c6b8aa1caf7c1103d40aa03311e
  2. Affected versionversion=5.12
  3. Affected versionversion=6f8315e5d9511ed1cf28ee2afbc9f89ff693de7b <c0539d5d474ee6fa4ebc41f927a0f98f81244f25
  4. Affected versionversion=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <1ff9dd6e7071a561f803135c1d684b13c7a7d01d
  5. Affected versionversion=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <3485f197518061371568f842405159aa9e4df551
  6. Affected versionversion=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <48f32b9a74e2ac8e854bb87bfefdbc745125a123
  7. Affected versionversion=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <bd66877c0b3b42eed0ecee0bd2a2a505c1e54177
  8. Affected versionversion=a8e87042482fd2d31c5cee62875b2ae75759ae8b <5a96c10a56037db006ba6769307a9731cf6073be
  9. Affected versionversion=d2c79105a90323a2a93484c85f9ac419ae9b183d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=319a06e58ed7f1443f7133c05513de470f90628d <e293263248f25c6b8aa1caf7c1103d40aa03311e; version=5.12; version=6f8315e5d9511ed1cf28ee2afbc9f89ff693de7b <c0539d5d474ee6fa4ebc41f927a0f98f81244f25; version=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <1ff9dd6e7071a561f803135c1d684b13c7a7d01d; version=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <3485f197518061371568f842405159aa9e4df551; version=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <48f32b9a74e2ac8e854bb87bfefdbc745125a123; version=9d480158ee86ad606d3a8baaf81e6b71acbfd7d5 <bd66877c0b3b42eed0ecee0bd2a2a505c1e54177; version=a8e87042482fd2d31c5cee62875b2ae75759ae8b <5a96c10a56037db006ba6769307a9731cf6073be; version=d2c79105a90323a2a93484c85f9ac419ae9b183d

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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