CVE-2026-53390

The CVE-2026-53390 issue affects ksmbd in the Linux kernel, where an out-of-bounds heap read can be triggered by crafted ACEs in SMB DACLs. Root cause: smb_check_perm_dacl() validates ACE header and caps sid.num_subauth but did not ensure ace->size is large enough to contain num_subauth sub-au...

ksmbd: validate zero num_subauth before sub_auth is accessed

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PT-2025-16678

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been identified, specifically in the ksmbd component. The issue arises when accessing psid-sub authpsid-num subauth - 1 without checking if num...