{"id":"CVE-2026-80552","revision":null,"records":[{"revision":"2a4e8cc405a84de3a2fb6429520438c6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80552","aliases":[],"title":"s390/vfio_ccw: Ensure index for read/write regions are within range","description":"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 capabilities itself, but\nneglected to do so for the existing read/write regions which\nshould also be enforced.","state":0,"publishedAt":"2026-08-26T14:37:21.178+00:00","modifiedAt":"2026-10-16T19:26:26.482+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/s390/cio/vfio_ccw_async.c\",\n \"drivers/s390/cio/vfio_ccw_chp.c\",\n \"drivers/s390/cio/vfio_ccw_ops.c\"\n ],\n \"versions\": [\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"d3b1e38404b22df5a1f93019f2bb656feaad5ae3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"79ea5e0c4c8a9842ae85f45062d947b3297dfc07\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"d597fa1273802941c7801202135976fecc29672b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"649badf3a2fd8929e40198603a2cb21b74c21700\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"db8e5d17ac03a65e2e0ee0ba50bf61a99741d871\",\n \"lessThan\": \"9f5f9a78fedc45bc29d6a0a64e3a3472361afae5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/s390/cio/vfio_ccw_async.c\",\n \"drivers/s390/cio/vfio_ccw_chp.c\",\n \"drivers/s390/cio/vfio_ccw_ops.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.218\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.184\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.153\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.105\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.46\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.10\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3acbedf5c0b8e0971f0de423c05cc02bbf6ddb99","https://git.kernel.org/stable/c/d3b1e38404b22df5a1f93019f2bb656feaad5ae3","https://git.kernel.org/stable/c/79ea5e0c4c8a9842ae85f45062d947b3297dfc07","https://git.kernel.org/stable/c/d597fa1273802941c7801202135976fecc29672b","https://git.kernel.org/stable/c/649badf3a2fd8929e40198603a2cb21b74c21700","https://git.kernel.org/stable/c/988d9b5be3c2c4baf9457ce8e11b477e13eb9fcf","https://git.kernel.org/stable/c/9f5f9a78fedc45bc29d6a0a64e3a3472361afae5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80552","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80552","identifiers":["CVE-2026-80552"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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