CVE-2022-50675

Local system interruption via incorrect MTE tag propagation

Published Dec 9, 2025 · Updated May 11, 2026

Improper page-tag handling in affected Linux kernels allows local users to interrupt an arm64 system through MTE tag faults. mte_sync_tags sets PG_mte_tagged on untagged pages whose PTE resembles swap or migration, so a later page copy propagates KASAN-owned tags and creates a mismatch with page flags. Reachability requires arm64 MTE with hardware-tag KASAN and a page copy such as migration; the observed consequence is an invalid-access fault, not data disclosure or modification.

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

Improper page-tag handling in affected Linux kernels allows local users to interrupt an arm64 system through MTE tag faults. mte_sync_tags sets PG_mte_tagged on untagged pages whose PTE resembles swap or migration, so a later page copy propagates KASAN-owned tags and creates a mismatch with page flags. Reachability requires arm64 MTE with hardware-tag KASAN and a page copy such as migration; the observed consequence is an invalid-access fault, not data disclosure or modification.

The record

CVE
CVE-2022-50675
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 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=5.14
  2. Affected versionversion=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <749e9fc18b1e1a3f93a9512e91bd7f93002d2821
  3. Affected versionversion=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <918002bdbe4328c8c0164a22e8ebf2384b80dc23
  4. Affected versionversion=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <a8e5e5146ad08d794c58252bab00b261045ef16d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <749e9fc18b1e1a3f93a9512e91bd7f93002d2821; version=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <918002bdbe4328c8c0164a22e8ebf2384b80dc23; version=69e3b846d8a753f9f279f29531ca56b0f7563ad0 <a8e5e5146ad08d794c58252bab00b261045ef16d

Published CVSS scores

5.5SUSECVSS: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

T1499.004Application 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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