CVEvulnerability
CVE-2026-74606
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-22
- Last modified
- 2026-10-14
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/5635211b44969f4816e29ec4d5f8665fb39535d0 git.kernel.org
- https://git.kernel.org/stable/c/74bb1eaf72d185a78c879eb2678ea500f82f46a8 git.kernel.org
- https://git.kernel.org/stable/c/b77581b25e213e83b79ce11eb30024e55ceeb3e9 git.kernel.org
- https://git.kernel.org/stable/c/f161d7861a0bfdf10af6b738b3b57636204661fb git.kernel.org
- https://git.kernel.org/stable/c/fd73b691702170d37d66f4b0278530cea8ed419a git.kernel.org