CVE-2022-50322

Local denial of service via callback mismatch

Published Sep 15, 2025 · Updated Sep 15, 2025

Denial of service in the Linux kernel MSC313 RTC driver allows local users to trigger a kernel panic or thread termination. The msc313_rtc_probe function passes clk_disable_unprepare as a devm_add_action_or_reset callback despite incompatible function prototypes. The failure occurs when the MSC313 RTC driver is probed in a kernel built with Clang control-flow integrity, terminating the calling thread or panicking the kernel.

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

Denial of service in the Linux kernel MSC313 RTC driver allows local users to trigger a kernel panic or thread termination. The msc313_rtc_probe function passes clk_disable_unprepare as a devm_add_action_or_reset callback despite incompatible function prototypes. The failure occurs when the MSC313 RTC driver is probed in a kernel built with Clang control-flow integrity, terminating the calling thread or panicking the kernel.

The record

CVE
CVE-2022-50322
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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <21b8a1dd56a163825e5749b303858fb902ebf198
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5affaaf3334c9274131dae889ed79ea0553d61b4
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ba50fee6b41bcbafaeed3c51f90d37d1480ff9a0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <21b8a1dd56a163825e5749b303858fb902ebf198; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5affaaf3334c9274131dae889ed79ea0553d61b4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ba50fee6b41bcbafaeed3c51f90d37d1480ff9a0

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

T1499.004Endpoint Denial of Service: Application 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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