{"id":"CVE-2026-64558","summary":"s390/pkey: Check length in pkey_pckmo handler implementation","details":"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.","modified":"2026-08-18T03:30:52.311138868Z","published":"2026-07-29T16:31:21.591Z","related":["openSUSE-SU-2026:11476-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64558.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/02028a24e26d85262ab9c8fc4344e1f3503007fc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1ac287e2af9a9112fe271427ef45eceb26bce8b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/433e5e70cdc1edf382d28d08a885b22e2b98b7da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/614aa0491c7a190556c2345dddee0b6f5ed90989"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64558.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64558"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8fcc231ce3bea12b78bb94b280cdc03cff342435"},{"fixed":"02028a24e26d85262ab9c8fc4344e1f3503007fc"},{"fixed":"433e5e70cdc1edf382d28d08a885b22e2b98b7da"},{"fixed":"614aa0491c7a190556c2345dddee0b6f5ed90989"},{"fixed":"1ac287e2af9a9112fe271427ef45eceb26bce8b4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64558.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64558.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}