CVE-2026-74662
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 caller drops the remaining reference. Publish the queue first and arm the timer while holding the queue lock. This makes timer expiry wait until the queue is visible in the hash table, so inet_frag_kill() can remove the node and balance the hash reference.
Affected versions
Linux kernel versions
4.4.174,
4.17
and later are affected. Fixed in
6.18.45,
7.1.9,
7.2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74662?
CVE-2026-74662 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.4.174 onward and has been patched in 6.18.45, 7.1.9 and 7.2. CVE-2026-74662 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74662?
Yes. CVE-2026-74662 has been patched. Fixed versions include 6.18.45, 7.1.9 and 7.2. If you are running Linux kernel 4.4.174 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74662 actively exploited?
No. CVE-2026-74662 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.