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CVE-2026-74690

Unknown

Last modified

CVE-2026-74690 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

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

VendorProductVersions
LinuxLinux>= 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?
Severity scoring for CVE-2026-74690 is pending analysis.
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