{"schema_version":"1.9.0","id":"CVE-2025-22038","published":"2025-04-16T14:11:56.316Z","modified":"2026-08-12T03:51:11.490278112Z","summary":"ksmbd: validate zero num_subauth before sub_auth is accessed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: validate zero num_subauth before sub_auth is accessed\n\nAccess psid->sub_auth[psid->num_subauth - 1] without checking\nif num_subauth is non-zero leads to an out-of-bounds read.\nThis patch adds a validation step to ensure num_subauth != 0\nbefore sub_auth is accessed.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0626e6641f6b467447c81dd7678a69c66f7746cf"},{"fixed":"3ac65de111c686c95316ade660f8ba7aea3cd3cc"},{"fixed":"0e36a3e080d6d8bd7a34e089345d043da4ac8283"},{"fixed":"56de7778a48560278c334077ace7b9ac4bfb2fd1"},{"fixed":"68c6c3142bfcdb049839d40a9a59ebe8ea865002"},{"fixed":"c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20"},{"fixed":"bf21e29d78cd2c2371023953d9c82dfef82ebb36"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22038.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"6.1.134"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.87"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.23"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.13.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.14.0"},{"fixed":"6.14.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22038.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22038.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22038"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22038.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H"}]}