{"id":"CVE-2026-64559","summary":"s390/pkey: Check length in PKEY_VERIFYPROTK ioctl","details":"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.","modified":"2026-07-30T04:03:25.702077223Z","published":"2026-07-29T16:31:22.195Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64559.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64559.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64559"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8fcc231ce3bea12b78bb94b280cdc03cff342435"},{"fixed":"0a9e34ccbe772b8f321388cdbdf4f22b94e513e7"},{"fixed":"693bf91d4db134f9b1c2840c8e287eee3d993bac"},{"fixed":"7e7e03848c918aa0acad5ffd75d929e3afec1554"},{"fixed":"b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64559.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-2026-64559.json"}}],"schema_version":"1.7.5"}