CVE-2026-74690

high

Description

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.

References

https://git.kernel.org/stable/c/fc3021284050ecb3bba8a7851340cedcb5037928

https://git.kernel.org/stable/c/b1896543ce59c4258625a35cf41e23a9a1f80ea2

https://git.kernel.org/stable/c/774394d27930ec4cf4cb3eed8ab6a4d20cb2430a

Details

Source: Mitre, NVD

Published: 2026-08-22

Updated: 2026-08-22

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High

EPSS

EPSS: 0.00206