CVE-2022-49274

Kernel crash via uninitialized OCFS2 quota metadata

Published Feb 26, 2025 · Updated Aug 5, 2026

Use of uninitialized quota metadata in affected Linux 5.15, 5.16, and 5.17 kernels allows context-dependent attackers to crash the kernel. In ocfs2_local_read_info, ocfs2_qinfo_lock_res_init consumes dqi_gqlock before the associated dqi_type and dqi_sb fields are initialized. Triggering the failure requires a quota-enabled OCFS2 image to be mounted through the local privileged mount path, and the resulting kernel crash interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use of uninitialized quota metadata in affected Linux 5.15, 5.16, and 5.17 kernels allows context-dependent attackers to crash the kernel. In ocfs2_local_read_info, ocfs2_qinfo_lock_res_init consumes dqi_gqlock before the associated dqi_type and dqi_sb fields are initialized. Triggering the failure requires a quota-enabled OCFS2 image to be mounted through the local privileged mount path, and the resulting kernel crash interrupts the host.

The record

CVE
CVE-2022-49274
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.15
  2. Affected versionversion=6c85c2c728193d19d6a908ae9fb312d0325e65ca <01931e1c4e3de5d777253acae64c0e8fd071a1dd
  3. Affected versionversion=6c85c2c728193d19d6a908ae9fb312d0325e65ca <7c5312fdb1dcfdc1951b018669af88d5d6420b31
  4. Affected versionversion=6c85c2c728193d19d6a908ae9fb312d0325e65ca <de19433423c7bedabbd4f9a25f7dbc62c5e78921
  5. Affected versionversion=6c85c2c728193d19d6a908ae9fb312d0325e65ca <eda31f77317647b9fbf889779ee1fb6907651865

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=6c85c2c728193d19d6a908ae9fb312d0325e65ca <01931e1c4e3de5d777253acae64c0e8fd071a1dd; version=6c85c2c728193d19d6a908ae9fb312d0325e65ca <7c5312fdb1dcfdc1951b018669af88d5d6420b31; version=6c85c2c728193d19d6a908ae9fb312d0325e65ca <de19433423c7bedabbd4f9a25f7dbc62c5e78921; version=6c85c2c728193d19d6a908ae9fb312d0325e65ca <eda31f77317647b9fbf889779ee1fb6907651865

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.

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

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource
T1499Endpoint Denial of Service

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo