CVE-2022-48708

Local kernel crash via unchecked function pointer

Published May 21, 2024 · Updated May 11, 2026

Affected Linux kernel branches from 4.11 before their respective fixes allow local users to crash the system through pinctrl-single. In pcs_set_mux(), the return from pinmux_generic_get_function() is dereferenced without checking whether it is NULL. Exploitation requires local low-privileged access and a pinctrl-single configuration that reaches the failing mux path; the documented consequence is loss of availability.

CVSS severity5.5
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

Affected Linux kernel branches from 4.11 before their respective fixes allow local users to crash the system through pinctrl-single. In pcs_set_mux(), the return from pinmux_generic_get_function() is dereferenced without checking whether it is NULL. Exploitation requires local low-privileged access and a pinctrl-single configuration that reaches the failing mux path; the documented consequence is loss of availability.

The record

CVE
CVE-2022-48708
Published
May 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 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=4.11
  2. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <1177bdafe87cbe543a2dc48a9bbac265aa5864db
  3. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <2b763f7de108cb1a5ad5ed08e617d677341947cb
  4. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <6e2a0521e4e84a2698f2da3950fb5c5496a4d208
  5. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <71668706fbe7d20e6f172fa3287fa8aac1b56c26
  6. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <bcc487001a15f71f103d102cba4ac8145d7a68f2
  7. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <d2d73e6d4822140445ad4a7b1c6091e0f5fe703b
  8. Affected versionversion=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <e671e63587c92b3fd767cf82e73129f6d5feeb33

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.11; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <1177bdafe87cbe543a2dc48a9bbac265aa5864db; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <2b763f7de108cb1a5ad5ed08e617d677341947cb; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <6e2a0521e4e84a2698f2da3950fb5c5496a4d208; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <71668706fbe7d20e6f172fa3287fa8aac1b56c26; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <bcc487001a15f71f103d102cba4ac8145d7a68f2; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <d2d73e6d4822140445ad4a7b1c6091e0f5fe703b; version=571aec4df5b72a80f80d1e524da8fbd7ff525c98 <e671e63587c92b3fd767cf82e73129f6d5feeb33

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application 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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