CVE-2022-50868

Service interruption via leaked PCI device references

Published Dec 30, 2025 · Updated Dec 30, 2025

Resource leak in the Linux kernel AMD hwrng driver 2.6.18 through 6.1.1 allows local users with administrative privileges to consume kernel resources. The amd_rng_mod_init path exits its for_each_pci_dev loop after finding a matching device without calling pci_dev_put on normal or error paths, leaving the PCI device reference count elevated. Administrative module control and compatible AMD PCI hardware are required; repeated initialization accumulates leaked references, while public records do not specify the resulting interruption mode.

CVSS severity4.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux kernel AMD hwrng driver 2.6.18 through 6.1.1 allows local users with administrative privileges to consume kernel resources. The amd_rng_mod_init path exits its for_each_pci_dev loop after finding a matching device without calling pci_dev_put on normal or error paths, leaving the PCI device reference count elevated. Administrative module control and compatible AMD PCI hardware are required; repeated initialization accumulates leaked references, while public records do not specify the resulting interruption mode.

The record

CVE
CVE-2022-50868
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=2.6.18
  2. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <1199f8e02941b326c60ab71a63002b7c80e38212
  3. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <2b79a5e560779b35e1164d57ae35c48b43373082
  4. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <2e10ecd012ae2b2a374b34f307e9bc1e6096c03d
  5. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <526c316948819d3ecd2bb20fe5e2580c51a1b760
  6. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <5998e5c30e839f73e62cb29e0d9617b0d16ccba3
  7. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <cb348c7908631dd9f60083a0a1542eab055d3edf
  8. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <e246f5eff26055bdcb61a2cc99c50af72a19680f
  9. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <ecadb5b0111ea19fc7c240bb25d424a94471eb7d
  10. Affected versionversion=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <f1c97f72ffd504f49882774e2ab689d982dc7afc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.18; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <1199f8e02941b326c60ab71a63002b7c80e38212; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <2b79a5e560779b35e1164d57ae35c48b43373082; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <2e10ecd012ae2b2a374b34f307e9bc1e6096c03d; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <526c316948819d3ecd2bb20fe5e2580c51a1b760; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <5998e5c30e839f73e62cb29e0d9617b0d16ccba3; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <cb348c7908631dd9f60083a0a1542eab055d3edf; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <e246f5eff26055bdcb61a2cc99c50af72a19680f; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <ecadb5b0111ea19fc7c240bb25d424a94471eb7d; version=96d63c0297ccfd6d9059c614b3f5555d9441a2b3 <f1c97f72ffd504f49882774e2ab689d982dc7afc

Published CVSS scores

4.4SUSECVSS:3.1/AV:L/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
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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