CVE-2026-98017

CVE CVE-2026-98017EUVD EUVD-2026-86670Published 2026-09-25T10:23:39.000ZLast changed 2026-09-25T14:41:50.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net/sched: defer qdisc freeing after failed creation An RTM_NEWQDISC request can make clsact bind a populated shared ingress block during ->init(), publishing an embedded mini_Qdisc to lockless readers. If the same request has an invalid TCA_RATE, estimator setup fails after ->init(); the unwind removes the pointer but synchronously frees its containing qdisc while tc_run() may still hold it. Retire failed qdiscs through the same RCU helper as normal destruction. Inline the synchronous free into the callback now that no direct callers remain.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.2.7; 4.16; 51ab2994c387c80b45caf8b8067b3f3b97771d25 <e6662f2100f8d33b0f4d0047c219efd6bba186ea; 51ab2994c387c80b45caf8b8067b3f3b97771d25 <5bfe927c5b4b290fad529186218c728589b4b101; 51ab2994c387c80b45caf8b8067b3f3b97771d25 <156a3bab69744e9225bb9eff8c5cc53da18d5a2e; 51ab2994c387c80b45caf8b8067b3f3b97771d25 <20bf6fa34b345333971bd4464a322cce87b83f4e; patch: 7.3-rc3; patch: 0; patch: 6.18.53; patch: 6.12.111

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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