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Time-of-check Time-of-use (TOCTOU) The advisory has been revoked - it doesn't affect any version of package kernel-tools-libs  (opens in a new tab)

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EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELTOOLSLIBS-19243673
  • published25 Aug 2026
  • disclosed22 Aug 2026
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Introduced: 22 Aug 2026

CVE-2026-74605  (opens in a new tab)
CWE-367  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs package and not the kernel-tools-libs package as distributed by Centos.

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.