CVE-2026-74605

CVE CVE-2026-74605EUVD EUVD-2026-64542Published 2026-08-22T15:31:53.000ZLast changed 2026-08-25T05:40:29.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: eventfs: Use children field for rcu head and add memory barriers When an eventfs inode is freed, it sets ei->is_freed and then uses its ei->list to add it to the srcu link list as the list field is a union with the rcu list head. As the ei->list is used to iterate over an SRCU protected list without taking the eventfs_mutex, there's nothing stopping the iteration over that list to see the ei->rcu instead of the ei->list and it will read a corrupt target. To fix this, change the union of the rcu list head with the children list. On freeing the eventfs inode, set the is_free and execute a smp_wmb() before adding the eventfs inode to the SRCU list. On iteration of the ei->children list, at the start, execute a smp_rmb() and then read the is_freed of the ei to see if the children list is still valid. If is_freed is set, then the ei_child read is not valid and the loop should exit immediately.

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; 305c4e4d80aca2c2d9cf2ebdea56e2eca6d3a6aa; 6.7.6 <6.8; patch: 0; 6.8; 6.6.18 <6.7; f3f41f444b321ec393edbc251e024fd62658ce55; patch: 7.1.9; 704f960dbee2f1634f4b4e16f208cb16eaf41c1e <004f7232e49730448f91665e76bdd7dff8e0c638; 704f960dbee2f1634f4b4e16f208cb16eaf41c1e <f0ece16ffca7384787b692431961ce202907acf5

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

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.