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CVE-2026-80553

HIGHCVSS 8.8/10

Last modified

CVE-2026-80553 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup tags in _release_dev to ensure work isn't dispatched after the private struct is free'd..

Description

In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup tags in _release_dev to ensure work isn't dispatched after the private struct is free'd.

Metrics

CVSS 3.1
8.8/10

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

Affected Software

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

VendorProductVersions
LinuxLinux>= e5f84dbaea59b4f712dac428c337528b70e1c533, < 87d569cb35a541b31a184faf982540694d4c9a89; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < 7492ca2d0c5d59add01e267be9f5a6eeb8076fd7; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < b94b28c1f0fae53b2f2d6180ae6442c9a1558f67; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < e868ea8be0bc88c6982f48ecf3259d98afd884ae; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < dc47a98abe6714577a25224534dbd356051097a3; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < b7ae0f7993867d009a4b554fc1d6d451c10580a0; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < 77f5e888d2e607a0b3141fb95091ad6ef1cca9a2; >= e5f84dbaea59b4f712dac428c337528b70e1c533, < 79c60b2c61105368dcc8444eb45847e21734f7c4
LinuxLinux4.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80553?
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup tags in _release_dev to ensure work isn't dispatched after the private struct is free'd.
How severe is CVE-2026-80553?
CVE-2026-80553 has a CVSS score of 8.8/10 (HIGH severity).
How do I fix CVE-2026-80553?
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