CVE-2022-48661

Local memory exhaustion via gpio-mockup registration leak

Published Apr 28, 2024 · Updated May 11, 2026

Resource leak in Linux kernel 5.15 before 5.15.71 and 5.16 before 5.19.12 allows local users to exhaust memory during chip setup. The gpio-mockup chip-registration path allocates a named-line string array, then leaves it allocated when software-node creation fails. Repeated failure requires local low-privileged access to the testing driver and can consume kernel memory until the host becomes unavailable.

CVSS severity5.5
Medium
EPSS probability0.22%
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 Linux kernel 5.15 before 5.15.71 and 5.16 before 5.19.12 allows local users to exhaust memory during chip setup. The gpio-mockup chip-registration path allocates a named-line string array, then leaves it allocated when software-node creation fails. Repeated failure requires local low-privileged access to the testing driver and can consume kernel memory until the host becomes unavailable.

The record

CVE
CVE-2022-48661
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-404, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=5.15
  2. Affected versionversion=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <02743c4091ccfb246f5cdbbe3f44b152d5d12933
  3. Affected versionversion=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <41f857033c44442a27f591fda8d986e7c9e42872
  4. Affected versionversion=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <9b26723e058faaf11b532fb4aa16d6849d581790

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <02743c4091ccfb246f5cdbbe3f44b152d5d12933; version=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <41f857033c44442a27f591fda8d986e7c9e42872; version=6fda593f3082ef1aa783ac13e89f673fd69a2cb6 <9b26723e058faaf11b532fb4aa16d6849d581790

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

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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