{"id":"CVE-2026-98222","summary":"KEYS: encrypted: fix integer overflow of datablob_len","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: encrypted: fix integer overflow of datablob_len\n\nencrypted_key_alloc() stores datablob_len in a u16. It is computed from\nmultiple string and payload lengths. If the result exceeds U16_MAX, the\nassignment truncates the allocation size. KASAN reports a 32760-byte\nslab-out-of-bounds write when __ekey_init() copies the master key\ndescription into the undersized buffer.\n\nThe total payload length stored in key-\u003edatalen is also a u16. Use\ncheck_add_overflow() to reject values that do not fit either destination,\nand use kzalloc_flex() for the flexible-array allocation.","modified":"2026-10-08T02:52:54.361777416Z","published":"2026-10-06T08:44:57.621Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98222.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1e720f63dbafc093a8f5d519f05b67724993edd4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8697c431e297eb0d0ab13dda6bc172b48a34f05c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cca38f2102a4cd35eda8d48950df4817b4b24757"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98222.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98222"},{"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":"7e70cb4978507cf31d76b90e4cfb4c28cad87f0c"},{"fixed":"1e720f63dbafc093a8f5d519f05b67724993edd4"},{"fixed":"a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0"},{"fixed":"cca38f2102a4cd35eda8d48950df4817b4b24757"},{"fixed":"8697c431e297eb0d0ab13dda6bc172b48a34f05c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98222.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98222.json"}}],"schema_version":"1.9.0"}