CVE-2022-49401

Kernel crash via unterminated task-name copy

Published Feb 26, 2025 · Updated May 11, 2026

Out-of-bounds read in Linux kernel 5.18 page-owner tracking allows local users to crash the kernel through a nonterminated task name. __set_page_owner_handle passes the fixed-size current->comm array to strlcpy, whose strlen call reads beyond the array when no null byte is present. The path requires page_owner to be built and enabled at boot; the resulting fortify failure raises a kernel BUG and interrupts the system.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux kernel 5.18 page-owner tracking allows local users to crash the kernel through a nonterminated task name. __set_page_owner_handle passes the fixed-size current->comm array to strlcpy, whose strlen call reads beyond the array when no null byte is present. The path requires page_owner to be built and enabled at boot; the resulting fortify failure raises a kernel BUG and interrupts the system.

The record

CVE
CVE-2022-49401
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=5.18
  2. Affected versionversion=865ed6a3278654ce4a55eb74c5283eeb82ad4699 <5cd9900a1ac8b0a4ff3cd97d4d77b7711be435bf
  3. Affected versionversion=865ed6a3278654ce4a55eb74c5283eeb82ad4699 <cd8c1fd8cdd14158f2d8bea2d1bfe8015dccfa3a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=865ed6a3278654ce4a55eb74c5283eeb82ad4699 <5cd9900a1ac8b0a4ff3cd97d4d77b7711be435bf; version=865ed6a3278654ce4a55eb74c5283eeb82ad4699 <cd8c1fd8cdd14158f2d8bea2d1bfe8015dccfa3a

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

No sourced classifications are available.

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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