CVE-2022-50190

Local kernel compromise via premature controller release

Published Jun 18, 2025 · Updated May 11, 2026

Use-after-free in the Linux kernel SPI core allows local users to compromise kernel confidentiality, integrity, and availability. When devm_add_action_or_reset() fails, devm_spi_unregister() drops ctlr->dev's reference count to zero before affected drivers call spi_put_controller() on their error path. Reachability requires that allocation-failure path and a driver that performs the additional controller release.

CVSS severity7.8
High
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

Use-after-free in the Linux kernel SPI core allows local users to compromise kernel confidentiality, integrity, and availability. When devm_add_action_or_reset() fails, devm_spi_unregister() drops ctlr->dev's reference count to zero before affected drivers call spi_put_controller() on their error path. Reachability requires that allocation-failure path and a driver that performs the additional controller release.

The record

CVE
CVE-2022-50190
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE 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=5.13
  2. Affected versionversion=59ebbe40fb51e307032ae7f63b2749fad2d4635a <34bab623ebfc08398499e463396b81abb4abe01e
  3. Affected versionversion=59ebbe40fb51e307032ae7f63b2749fad2d4635a <3c6bd448442b6c3f6843ac70d57201a13478dd47
  4. Affected versionversion=59ebbe40fb51e307032ae7f63b2749fad2d4635a <43cc5a0afe4184a7fafe1eba32b5a11bb69c9ce0
  5. Affected versionversion=59ebbe40fb51e307032ae7f63b2749fad2d4635a <445fb9c19cf45bd9472fd9babaa31c5e6c7d2720

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=59ebbe40fb51e307032ae7f63b2749fad2d4635a <34bab623ebfc08398499e463396b81abb4abe01e; version=59ebbe40fb51e307032ae7f63b2749fad2d4635a <3c6bd448442b6c3f6843ac70d57201a13478dd47; version=59ebbe40fb51e307032ae7f63b2749fad2d4635a <43cc5a0afe4184a7fafe1eba32b5a11bb69c9ce0; version=59ebbe40fb51e307032ae7f63b2749fad2d4635a <445fb9c19cf45bd9472fd9babaa31c5e6c7d2720

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free
T1068Exploitation for Privilege Escalation

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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