{"id":"CVE-2026-80552","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Ensure index for read/write regions are within range\n\nThe introduction of the capability chain rightly clamped the\nregion indexes to the range of the cap…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Ensure index for read/write regions are within range\n\nThe introduction of the capability chain rightly clamped the\nregion indexes to the range of the cap…","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","vendor":"Linux","product":"Linux","affected":["Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < 3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < d3b1e38404b22df5a1f93019f2bb656feaad5ae3","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < 79ea5e0c4c8a9842ae85f45062d947b3297dfc07","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < d597fa1273802941c7801202135976fecc29672b","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < 649badf3a2fd8929e40198603a2cb21b74c21700","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < 988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf","Linux >= db8e5d17ac03a65e2e0ee0ba50bf61a99741d871 < 9f5f9a78fedc45bc29d6a0a64e3a3472361afae5","Linux 5.2"],"published":"2026-08-26","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:17:59.527","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80552","references":[{"url":"https://git.kernel.org/stable/c/3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/649badf3a2fd8929e40198603a2cb21b74c21700","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/79ea5e0c4c8a9842ae85f45062d947b3297dfc07","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9f5f9a78fedc45bc29d6a0a64e3a3472361afae5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d3b1e38404b22df5a1f93019f2bb656feaad5ae3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d597fa1273802941c7801202135976fecc29672b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00176,"epssPercentile":0.07049,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:17:15.526707Z"},"ingestedAt":"2026-10-16T19:46:24.317Z","slug":"CVE-2026-80552","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Ensure index for read/write regions are within range\n\nThe introduction of the capability chain rightly clamped the\nregion indexes to the range of the capabilities itself, but\nneglected to do so for the existing read/write regions which\nshould also be enforced.\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":[]}