CVE-2026-63909

A flaw was found in the ksmbd component of the Linux kernel. A transposed bounds check in the smbcheckpermdacl function can lead to a 2-byte heap out-of-bounds OOB read during Server Message Block SMB2 create operations. This vulnerability may allow a remote attacker to disclose sensitive...

CVE-2026-63909 ksmbd: OOB read regression in smb_check_perm_dacl() ACE-walk loops

In the Linux kernel, the following vulnerability has been resolved: ksmbd: OOB read regression in smbcheckpermdacl ACE-walk loops Commit d07b26f39246 "ksmbd: require minimum ACE size in smbcheckpermdacl" introduced a transposed bounds check: if offsetofstruct smbace, sid + acessize size offset 2...

CVE-2026-53390 ksmbd: fix out-of-bounds read in smb_check_perm_dacl()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013488)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013488 advisory. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix reference count leak in smbcheckpermdacl The issue happens in a specific path in...

SUSE CVE-2022-49366

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix reference count leak in smbcheckpermdacl The issue happens in a specific path in smbcheckpermdacl. When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference...