{"id":"CVE-2026-64558","revision":"3ee0447dad1c4810ad3dd46316a16c58","records":[{"revision":"3ee0447dad1c4810ad3dd46316a16c58","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64558","aliases":[],"title":"s390/pkey: Check length in pkey_pckmo handler implementation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pkey: Check length in pkey_pckmo handler implementation\n\nExplicitly check the length of the target buffer in the pkey_pckmo\nimplementation of the key_to_protkey() handler function. The handler\nfunction fails, if the generated output data exceeds the length of the\nprovided target buffer.","state":0,"publishedAt":"2026-07-29T16:31:21.591+00:00","modifiedAt":"2026-10-19T20:48:41.175+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_pckmo.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"02028a24e26d85262ab9c8fc4344e1f3503007fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"433e5e70cdc1edf382d28d08a885b22e2b98b7da\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"614aa0491c7a190556c2345dddee0b6f5ed90989\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8fcc231ce3bea12b78bb94b280cdc03cff342435\",\n                            \"lessThan\": \"1ac287e2af9a9112fe271427ef45eceb26bce8b4\",\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_pckmo.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/02028a24e26d85262ab9c8fc4344e1f3503007fc","https://git.kernel.org/stable/c/433e5e70cdc1edf382d28d08a885b22e2b98b7da","https://git.kernel.org/stable/c/614aa0491c7a190556c2345dddee0b6f5ed90989","https://git.kernel.org/stable/c/1ac287e2af9a9112fe271427ef45eceb26bce8b4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64558","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64558","identifiers":["CVE-2026-64558"]},"retained":false,"historicalAffected":[]}],"coverage":[]}