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CVE-2026-74606

Unknown

Last modified

CVE-2026-74606 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: eventfs: Fix use-after-free in eventfs_remove_rec() eventfs_remove_rec() recursively removes the child at the current loop position. After the recursive call returns, list_for_each_entry() advances by reading list.next from the removed child. If free_ei() drops the final reference, release_ei() reuses the list/rcu union to queue an SRCU callback.

Description

In the Linux kernel, the following vulnerability has been resolved: eventfs: Fix use-after-free in eventfs_remove_rec() eventfs_remove_rec() recursively removes the child at the current loop position. After the recursive call returns, list_for_each_entry() advances by reading list.next from the removed child. If free_ei() drops the final reference, release_ei() reuses the list/rcu union to queue an SRCU callback. The child may be freed before that read. The eventfs_mutex serializes list updates, but it does not keep the removed child alive or prevent the SRCU callback from running. Use list_for_each_entry_safe() to save the next sibling before recursively removing the current child.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5dfb04100326f70e3b2d2872c2476ed20b804837, < b77581b25e213e83b79ce11eb30024e55ceeb3e9; >= 43aa6f97c2d03a52c1ddb86768575fc84344bdbb, < f161d7861a0bfdf10af6b738b3b57636204661fb; >= 43aa6f97c2d03a52c1ddb86768575fc84344bdbb, < 5635211b44969f4816e29ec4d5f8665fb39535d0; >= 43aa6f97c2d03a52c1ddb86768575fc84344bdbb, < 74bb1eaf72d185a78c879eb2678ea500f82f46a8; >= 43aa6f97c2d03a52c1ddb86768575fc84344bdbb, < fd73b691702170d37d66f4b0278530cea8ed419a; 5a43badefe0eccca0c26144c0a44b8d417ce8103; >= 6.6.18, < 6.6.152; >= 6.7.6, < 6.8
LinuxLinux6.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74606?
In the Linux kernel, the following vulnerability has been resolved: eventfs: Fix use-after-free in eventfs_remove_rec() eventfs_remove_rec() recursively removes the child at the current loop position. After the recursive call returns, list_for_each_entry() advances by reading list.next from the removed child. If free_ei() drops the final reference, release_ei() reuses the list/rcu union to queue an SRCU callback. The child may be freed before that read. The eventfs_mutex serializes list updates, but it does not keep the removed child alive or prevent the SRCU callback from running. Use list_for_each_entry_safe() to save the next sibling before recursively removing the current child.
How severe is CVE-2026-74606?
Severity scoring for CVE-2026-74606 is pending analysis.
How do I fix CVE-2026-74606?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST