CVE-2022-50337

Local service interruption via PCI reference leak

Published Sep 15, 2025 · Updated Sep 15, 2025

Resource leakage in the OCXL driver of affected Linux kernel releases allows local users to interrupt service through repeated device access. The get_function_0() helper obtains an incremented PCI-device reference from pci_get_domain_bus_and_slot(), but affected callers fail to release it with pci_dev_put(). The path requires low-privileged local access and an OpenCAPI accelerator; sustained OCXL operations consume kernel resources and interrupt host service.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leakage in the OCXL driver of affected Linux kernel releases allows local users to interrupt service through repeated device access. The get_function_0() helper obtains an incremented PCI-device reference from pci_get_domain_bus_and_slot(), but affected callers fail to release it with pci_dev_put(). The path requires low-privileged local access and an OpenCAPI accelerator; sustained OCXL operations consume kernel resources and interrupt host service.

The record

CVE
CVE-2022-50337
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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=5.9
  2. Affected versionversion=87db7579ebd5ded337056eb765542eb2608f16e3 <27158c72678b39ee01cc01de1aba6b51c71abe2f
  3. Affected versionversion=87db7579ebd5ded337056eb765542eb2608f16e3 <37a13b274e4513c757e50c002ddcbf4bc89adbb2
  4. Affected versionversion=87db7579ebd5ded337056eb765542eb2608f16e3 <40ff4c2335a98f0ee96b099bfd70b8e6644f321f
  5. Affected versionversion=87db7579ebd5ded337056eb765542eb2608f16e3 <9a1b3148975b71fdc194e62612478346bbe618cd
  6. Affected versionversion=87db7579ebd5ded337056eb765542eb2608f16e3 <a40e1b0a922a53fa925ea8b296e3de30a31ed028

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=87db7579ebd5ded337056eb765542eb2608f16e3 <27158c72678b39ee01cc01de1aba6b51c71abe2f; version=87db7579ebd5ded337056eb765542eb2608f16e3 <37a13b274e4513c757e50c002ddcbf4bc89adbb2; version=87db7579ebd5ded337056eb765542eb2608f16e3 <40ff4c2335a98f0ee96b099bfd70b8e6644f321f; version=87db7579ebd5ded337056eb765542eb2608f16e3 <9a1b3148975b71fdc194e62612478346bbe618cd; version=87db7579ebd5ded337056eb765542eb2608f16e3 <a40e1b0a922a53fa925ea8b296e3de30a31ed028

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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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