TI-2026-52388 Aliases CVE-2026-74605 GHSA-c64v-3vw2-pvwh

eventfs: Use children field for rcu head and add memory barriers

LOW 33Published 2026-08-22 · Updated 2026-10-21

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.00129 2nd percentileScored 2026-11-07

Fix Partial Linux (Linux): 6.6.160, 6.8, 6.12.114 +3Red Hat: 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	6.6.18 to before 6.6.160; 6.7.6 to before 6.8	6.6.160, 6.8	Patch available	CNA
Linux	Linux	6.8 and later	6.6.160, 6.12.114, 6.18.57, 7.1.9, 7.2	Patch available	CNA

Linux VendorLinux Affected 6.6.18 to before 6.6.160; 6.7.6 to before 6.8 Fixed in 6.6.160, 6.8 Patch available CNA
Linux VendorLinux Affected 6.8 and later Fixed in 6.6.160, 6.12.114, 6.18.57, 7.1.9, 7.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	—	—	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.8
Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.12.114, 6.18.57, 7.1.9, 7.2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred

Not affected: 4 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2026-74605
2026-10-03 Alias added: GHSA-c64v-3vw2-pvwh
2026-10-16 Fix available: Linux/Linux@2b80707b9e27671e10840d17c6f8f774c4ad9847, Linux/[email protected] · CNA
2026-10-16 1 new reference · CNA
2026-10-21 Fix available: Linux/Linux@1b95382da85cff3bf0f922ff0275f186abdadfce, Linux/Linux@25d27d5fa8645ab61018c3efec5c69f49280ca7d, Linux/[email protected] +1 · CNA
2026-10-21 2 new references · CNA

References

Other 5

TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4

See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences