CVE-2026-64139

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix SID memory leak in setposixaclentriesdacl on overflow Commit 299f962c0b02 "ksmbd: use checkaddoverflow to prevent u16 DACL size overflow" added checkaddoverflow guards that break out of the ACE-building loops in...

CVE-2026-64139

In the Linux kernel ksmbd subsystem, commit 299f962c0b02 added check_add_overflow() guards that issue break statements in set_posix_acl_entries_dacl(), bypassing kfree(sid) calls and leaking struct smb_sid allocations per loop iteration. A crafted file with many POSIX ACL entries triggers repeate...