CVE-2026-74606

eventfs: Fix use-after-free in eventfs_remove_rec()

HIGH
7.8
CVSS Score
Published: August 22, 2026 at 03:31 PM UTC
Updated: October 14, 2026 at 01:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.6.18 ≤ v < 6.6.1526.7.6 ≤ v < 6.843aa6f97c2d03a52c1ddb86768575fc84344bdbb5a43badefe0eccca0c26144c0a44b8d417ce81035dfb04100326f70e3b2d2872c2476ed20b8048376.6.186.7.66.8
Vendor states this is fixed in 5635211b44969f4816e29ec4d5f8665fb39535d0 (fixed)
Vendor states this is fixed in 74bb1eaf72d185a78c879eb2678ea500f82f46a8 (fixed)
Vendor states this is fixed in b77581b25e213e83b79ce11eb30024e55ceeb3e9 (fixed)
Vendor states this is fixed in f161d7861a0bfdf10af6b738b3b57636204661fb (fixed)
Vendor states this is fixed in fd73b691702170d37d66f4b0278530cea8ed419a (fixed)
Vendor states this is fixed in 6.12.104 (unaffected)
Vendor states this is fixed in 6.18.45 (unaffected)
Vendor states this is fixed in 6.6.152 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)
Vendor states this is fixed in 7.1.9 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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