CVE-2022-50416

Service interruption via failed interrupt-controller mapping leak

Published Sep 18, 2025 · Updated Sep 18, 2025

Memory leak in affected Linux kernels allows local users to interrupt service by triggering failed WPCM450 interrupt-controller mapping. The wpcm450_aic_of_init function returns after of_iomap fails without freeing the previously allocated aic structure. Reachability requires the WPCM450 initialization path and local low-privileged access; repeated failures can exhaust kernel memory and disrupt availability.

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

Memory leak in affected Linux kernels allows local users to interrupt service by triggering failed WPCM450 interrupt-controller mapping. The wpcm450_aic_of_init function returns after of_iomap fails without freeing the previously allocated aic structure. Reachability requires the WPCM450 initialization path and local low-privileged access; repeated failures can exhaust kernel memory and disrupt availability.

The record

CVE
CVE-2022-50416
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=5.13
  2. Affected versionversion=fead4dd496631707549f414b4059afb86ea8fb80 <4208d4faf36573a507b5e5de17abe342e9276759
  3. Affected versionversion=fead4dd496631707549f414b4059afb86ea8fb80 <740efb64ca5e8f2b30ac843bc4ab07950479fed4
  4. Affected versionversion=fead4dd496631707549f414b4059afb86ea8fb80 <773c9d7f127f7a599d42ceed831de69f5aa22f03
  5. Affected versionversion=fead4dd496631707549f414b4059afb86ea8fb80 <bcbcb396e1a8bd4dcaabfb0d5b98abae70880470

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=fead4dd496631707549f414b4059afb86ea8fb80 <4208d4faf36573a507b5e5de17abe342e9276759; version=fead4dd496631707549f414b4059afb86ea8fb80 <740efb64ca5e8f2b30ac843bc4ab07950479fed4; version=fead4dd496631707549f414b4059afb86ea8fb80 <773c9d7f127f7a599d42ceed831de69f5aa22f03; version=fead4dd496631707549f414b4059afb86ea8fb80 <bcbcb396e1a8bd4dcaabfb0d5b98abae70880470

Published CVSS scores

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

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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