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Review reviewHigh

CVE-2026-53361

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ......

CVSS
7.1
EPSS
0.12%
2.52% percentile
CISA KEV
Not listed
Published
2026.07.04
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.12%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ......

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 328840c93bd6a4871dd10908d01b41eab83eb8e2 < 82c17e13d404f686e164590483fd6c1abaa675d0, >= 8b90a9f819dc2a06baae4ec1a64d875e53b824ec < 591f1ac217428a6d2b32a8ac14aac0fab44f155a, >= 8b90a9f819dc2a06baae4ec1a64d875e53b824ec < 0cfa78c050662784fc8e3ab26dbfd1dc632b2082, >= 8b90a9f819dc2a06baae4ec1a64d875e53b824ec < d82ba05263c69fa2437fe93e4e561cc40f4c03af, >= ceb8bd6c69c1680fd9b45e7f16d7170c9c7513a5, >= 6.6.93 < 6.6.144, >= 6.1.141 < 6.2, >= 6.9, >= 6.9 < 6.12.95, >= 6.13 < 6.18.38, >= 6.19 < 7.1, 7.1
Fixed versions
6.2, 6.6.144, 6.12.95, 6.18.38, 7.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
Not available