CVE-2026-80553 (CVSS 8.8)

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.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/7492ca2d0c5d59add01e267be9f5a6eeb8076fd7 https://git.kernel.org/stable/c/77f5e888d2e607a0b3141fb95091ad6ef1cca9a2 https://git.kernel.org/stable/c/79c60b2c61105368dcc8444eb45847e21734f7c4 https://git.kernel.org/stable/c/87d569cb35a541b31a184faf982540694d4c9a89 https://git.kernel.org/stable/c/b7ae0f7993867d009a4b554fc1d6d451c10580a0 https://git.kernel.org/stable/c/b94b28c1f0fae53b2f2d6180ae6442c9a1558f67 https://git.kernel.org/stable/c/dc47a98abe6714577a25224534dbd356051097a3 https://git.kernel.org/stable/c/e868ea8be0bc88c6982f48ecf3259d98afd884ae

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-80553? +

CVE-2026-80553 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80553? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-80553