{"id":"CVE-2026-64559","revision":"3705bb6746fd424d8c6687eeb900d41b","records":[{"revision":"3705bb6746fd424d8c6687eeb900d41b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64559","aliases":[],"title":"s390/pkey: Check length in PKEY_VERIFYPROTK ioctl","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pkey: Check length in PKEY_VERIFYPROTK ioctl\n\nExplicitly check the buffer length request structure provided by\nuser-space and fail, if it exceeds the buffer size.","state":0,"publishedAt":"2026-07-29T16:31:22.195+00:00","modifiedAt":"2026-10-19T20:48:41.365+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/crypto/pkey_api.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"0a9e34ccbe772b8f321388cdbdf4f22b94e513e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"693bf91d4db134f9b1c2840c8e287eee3d993bac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"7e7e03848c918aa0acad5ffd75d929e3afec1554\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970\",\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/crypto/pkey_api.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\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:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7","https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac","https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554","https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64559","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64559","identifiers":["CVE-2026-64559"]},"retained":false,"historicalAffected":[]}],"coverage":[]}