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CVE-2026-74690

HIGHCVSS 8.4/10EPSS 0.20%

Last modified

CVE-2026-74690 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.4/10

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

EPSS Probability
0.20%

9.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < 9c9a59603b2b016424fe2f9a1cb58c8c2f7198f4; >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < 950dac9e8c4e3cf68fa8c01f77d3ac3b7369c6a9; >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < 58803870ba0841e53b630a1290c6838b091dd128; >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < fc3021284050ecb3bba8a7851340cedcb5037928; >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < 774394d27930ec4cf4cb3eed8ab6a4d20cb2430a; >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695, < b1896543ce59c4258625a35cf41e23a9a1f80ea2
LinuxLinux4.19

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74690?
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.
How severe is CVE-2026-74690?
CVE-2026-74690 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74690?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST