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ReviewCritical

CVE-2026-74662

Linux

In the Linux kernel, the following vulnerability has been resolved: inet: frags: publish queues before arming timer inet_frag_create() arms the fragment queue timer before inserting the queue into the fqdir rhashtable. If the namespace fragment timeout is zero or negative, the timer can run before the queue is published. The timer callback then marks the queue complete, tries to remove a node that is not in the hash table yet, and drops the anticipated hash reference. Creation can subsequently publish the completed queue without restoring that reference, leaving a stale hash node after the...

CVSS
9.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.23
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: inet: frags: publish queues before arming timer inet_frag_create() arms the fragment queue timer before inserting the queue into the fqdir rhashtable. If the namespace fragment timeout is zero or negative, the timer can run before the queue is published. The timer callback then marks the queue complete, tries to remove a node that is not in the hash table yet, and drops the anticipated hash reference. Creation can subsequently publish the completed queue without restoring that reference, leaving a stale hash node after the...

Affected product and versions

Product
Linux
Affected versions
>= 648700f76b03b7e8149d13cc2bdb3355035258a9 < f4e4dab62181b7fe7c011bed6fbef9fc3d48c769, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 4ed0681dc2c1e0538b79d2fc56190ffcb369dacd, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 08a04d7bfb9c103432561aff8a62b6872e694a6a, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < d3ffb89b2944672cf7bdd8e9ee577d2043b4a956, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 39c6c4b267b65f00e0b0335a2ae00cbe9e3174f0, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 9f904dd3e455750e5d4ec9b2f134835811b85a2f, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 928128865e43b197e30688dc1bc991592c97edcf, >= 648700f76b03b7e8149d13cc2bdb3355035258a9 < 653d7ddf6cba867777a3d14c4f83ace008c5ad13, >= 493107105843f299662b3b664a83804645564f12, >= 4.4.174 < 4.5, >= 4.17
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available