{"id":"CVE-2026-80553","title":"s390/vfio_ccw: Cancel existing workqueues","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Cancel existing workqueues\n\nThe initialization of the io_work and crw_work workqueues begs the\nquestion of whether they should be un-initialized. Add the…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 87d569cb35a541b31a184faf982540694d4c9a89","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 7492ca2d0c5d59add01e267be9f5a6eeb8076fd7","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < b94b28c1f0fae53b2f2d6180ae6442c9a1558f67","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < e868ea8be0bc88c6982f48ecf3259d98afd884ae","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < dc47a98abe6714577a25224534dbd356051097a3","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < b7ae0f7993867d009a4b554fc1d6d451c10580a0","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 77f5e888d2e607a0b3141fb95091ad6ef1cca9a2","Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 79c60b2c61105368dcc8444eb45847e21734f7c4","Linux 4.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:17:19.506995Z"},"published":"2026-08-26","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:26:26.626Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80553","references":[{"url":"https://git.kernel.org/stable/c/87d569cb35a541b31a184faf982540694d4c9a89"},{"url":"https://git.kernel.org/stable/c/7492ca2d0c5d59add01e267be9f5a6eeb8076fd7"},{"url":"https://git.kernel.org/stable/c/b94b28c1f0fae53b2f2d6180ae6442c9a1558f67"},{"url":"https://git.kernel.org/stable/c/e868ea8be0bc88c6982f48ecf3259d98afd884ae"},{"url":"https://git.kernel.org/stable/c/dc47a98abe6714577a25224534dbd356051097a3"},{"url":"https://git.kernel.org/stable/c/b7ae0f7993867d009a4b554fc1d6d451c10580a0"},{"url":"https://git.kernel.org/stable/c/77f5e888d2e607a0b3141fb95091ad6ef1cca9a2"},{"url":"https://git.kernel.org/stable/c/79c60b2c61105368dcc8444eb45847e21734f7c4"}],"tags":["cve.org"],"epss":0.00176,"epssPercentile":0.06641,"ingestedAt":"2026-10-16T19:46:24.318Z","slug":"CVE-2026-80553","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Cancel existing workqueues\n\nThe initialization of the io_work and crw_work workqueues begs the\nquestion of whether they should be un-initialized. Add the corresponding\ncleanup tags in _release_dev to ensure work isn't dispatched after\nthe private struct is free'd.\n\n## Affected\n\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 87d569cb35a541b31a184faf982540694d4c9a89`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 7492ca2d0c5d59add01e267be9f5a6eeb8076fd7`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < b94b28c1f0fae53b2f2d6180ae6442c9a1558f67`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < e868ea8be0bc88c6982f48ecf3259d98afd884ae`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < dc47a98abe6714577a25224534dbd356051097a3`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < b7ae0f7993867d009a4b554fc1d6d451c10580a0`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 77f5e888d2e607a0b3141fb95091ad6ef1cca9a2`\n- `Linux >= e5f84dbaea59b4f712dac428c337528b70e1c533 < 79c60b2c61105368dcc8444eb45847e21734f7c4`\n- `Linux 4.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}