{"id":"CVE-2026-23364","summary":"ksmbd: Compare MACs in constant time","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Compare MACs in constant time\n\nTo prevent timing attacks, MAC comparisons need to be constant-time.\nReplace the memcmp() with the correct function, crypto_memneq().","modified":"2026-04-14T03:48:36.396713Z","published":"2026-03-25T10:27:46.960Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23364.json"},"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/2cdc56ed67615ba0921383a688f24415ebe065f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dc"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23364.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23364"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"},{"fixed":"cd52a0e309659537048a864211abc3ea4c5caa63"},{"fixed":"307afccb751f542246bd5dc68a2c1ffe1a78418c"},{"fixed":"2cdc56ed67615ba0921383a688f24415ebe065f3"},{"fixed":"93c0a22fec914ec4b697e464895a0f594e29fb28"},{"fixed":"f4588b85efd6007d46b80aa1b9fb746628ffb3dc"},{"fixed":"c5794709bc9105935dbedef8b9cf9c06f2b559fa"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23364.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23364.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}