CVE-2022-50289

Service interruption via leaked OCFS2 table header

Published Sep 15, 2025 · Updated Sep 15, 2025

Memory leak in the OCFS2 stack glue in Linux 2.6.26 through 6.1.1 allows local users to interrupt service during module loading. When ocfs2_sysfs_init() fails, ocfs2_stack_glue_init() returns without freeing the 128-byte ocfs2_table_header allocation. Reachability depends on privileged module loading and a failing sysfs initialization path; repeated leaks consume kernel memory and affect availability.

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

What happened

Memory leak in the OCFS2 stack glue in Linux 2.6.26 through 6.1.1 allows local users to interrupt service during module loading. When ocfs2_sysfs_init() fails, ocfs2_stack_glue_init() returns without freeing the 128-byte ocfs2_table_header allocation. Reachability depends on privileged module loading and a failing sysfs initialization path; repeated leaks consume kernel memory and affect availability.

The record

CVE
CVE-2022-50289
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=2.6.26
  2. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <0000281f019111526f7abccc61f2746d2eb626ca
  3. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <0b2128b70849f2728949babfc1c760096ef72f5d
  4. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <13b6269dd022aaa69ca8d1df374ab327504121cf
  5. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <61d68cf2ba79128c48d4b3fa4d10c34dc18ba572
  6. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <6f6c13776cbee4b6a515f4cd3b859f046be4f6f9
  7. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <7c8bf45cea9c8d6fb3e14d8cd5ae60e0372f39b7
  8. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <802abe2bc654e87334e6a0ab6c1adc2b6d5f6394
  9. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <b0822faebd79971617abd495beb2d6f5356b88bf
  10. Affected versionversion=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <f5f2682d3a34dd8350bf63f232d885fd95f25b92

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.26; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <0000281f019111526f7abccc61f2746d2eb626ca; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <0b2128b70849f2728949babfc1c760096ef72f5d; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <13b6269dd022aaa69ca8d1df374ab327504121cf; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <61d68cf2ba79128c48d4b3fa4d10c34dc18ba572; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <6f6c13776cbee4b6a515f4cd3b859f046be4f6f9; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <7c8bf45cea9c8d6fb3e14d8cd5ae60e0372f39b7; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <802abe2bc654e87334e6a0ab6c1adc2b6d5f6394; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <b0822faebd79971617abd495beb2d6f5356b88bf; version=3878f110f71a0971ff7acc15dd6db711b6ef37c6 <f5f2682d3a34dd8350bf63f232d885fd95f25b92

Published CVSS scores

5.5CanonicalCVSS: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

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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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