CVE-2026-72436

CVE CVE-2026-72436EUVD EUVD-2026-59335Published 2026-08-15T05:56:50.000ZLast changed 2026-08-17T05:44:12.000ZCVSS 9.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types Sashiko pointed out that there are a few lockless RCU readers using test_bit() which is a relaxed atomic operation and provides no memory barrier guarantees. Use test_bit_acquire() instead where the operation may run parallel with add/del/gc, i.e. is not one from the next cases - protected by region lock - in a set destroy phase - in a new/temporary set creation phase

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 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <e4b4984e28c16406ecb318444dea4a8bf47def3e; 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <3219d74e4536658c937fd878a327257b86ce80dd; 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <c107233d2ff4fd7cef5d02f9124b99194957a710; patch: 6.12.97; patch: 6.18.40; 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <6329d3a9afe715fddda0460cfa46b496d61c2fe0; 4.2; 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <c4d257734e91bfcdc71d41843392dd6400b5bb1b; patch: 6.6.145; 18f84d41d34fa35d0d64bbaea01fe664553ecc06 <7445fe965b7d8756070a40e80f8b73348ccda1d7; patch: 7.1.5; patch: 6.1.178; patch: 0; patch: 7.2

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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