CVE-2026-74690

Updated on 22 Aug 2026

Severity

8.4 High severity

Details

CVSS score
8.4
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

s390/ism: Fix UAF of sba and ieq during ism_dev_exit()

A ism interrupt handler can be active in parallel with ism_dev_exit(), accessing freed data structures.

No new interrupts will be generated after unregister_ieq(). Drain ongoing interrupt handlers by free_irq(), before freeing ism data structures.

Details

Affected packages:
linux @ 5.4.0 (+2 more)

Fixes