CVE-2019-1253

CVE-2019-1253 Sobrescritura arbitraria del descriptor de seguridad de archivo en AppXSvc EoP He informado de forma independiente esta vulnerabilidad a MSRC, sin embargo, mi envío resultó ser un duplicado debido a que la corrección para CVE-2019-1253 también solucionó este problema. Mi PoC difiere...

CVE-2026-98114

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

CVE-2026-98114

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: An out-of-bounds access issue in parsesecdesc has been fixed. If osidoffset, gsidoffset, and dacloffset can be greater than smbntsdstruct.size. If they are smaller, it could lead to an out-of-bounds situation. Additionally...

CVE-2026-80112 PassMark PerformanceTest, BurnInTest, and OSForensics Improper Access Control via DirectIo64.sys

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an improper access control vulnerability in the DirectIo64.sys kernel driver that allows unprivileged local users to perform privileged hardware operations by opening...

EUVD-2026-71683

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an improper access control vulnerability in the DirectIo64.sys kernel driver that allows unprivileged local users to perform privileged hardware operations by opening...

CVE-2026-80112

PassMark PerformanceTest , BurnInTest , and OSForensics each ship a vulnerable DirectIo64.sys kernel driver. The root cause is an improper access control flaw: the device object is created without a security descriptor, so Windows applies a permissive default ACL . This allows unprivileged local ...

Unity Linux 20.1070e Security Update: ntfs-3g (UTSA-2026-099508)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099508 advisory. In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfsbuildpermissionsposix in acls.c that allows an attacker to corrupt heap memory in the...

CVE-2026-72382

CVE-2026-72382 affects the Linux kernel ksmbd component. The issue is an unsigned underflow in parse_dacl() when computing the ACE count for a security descriptor, caused by subtracting sizeof(struct smb_acl) from a 16-bit DACL size. This can allow a malformed security descriptor to bypass the AC...

CVE-2026-68100

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into the response DACL without checking sid.numsubauth. The ACE bytes...

CVE-2026-68100

The CVE-2026-68100 issue affects ksmbd in the Linux kernel. A flaw in set_ntacl_dacl() copies ACEs from an attacker-controlled security descriptor without validating sid.num_subauth, allowing an authenticated SMB2 client to trigger an out-of-bounds heap read (~1 KB) when building a POSIX ACL in a...

CVE-2026-68100 ksmbd: validate num_subauth when copying ACE in set_ntacl_dacl

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into the response DACL without checking sid.numsubauth. The ACE bytes...

EUVD-2026-55481

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into the response DACL without checking sid.numsubauth. The ACE bytes...

CVE-2026-64394

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

CVE-2026-64394

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

CVE-2026-64394 ksmbd: add a WRITE_DAC/WRITE_OWNER check to SMB2 SET_INFO SECURITY

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

CVE-2026-64394 ksmbd: add a WRITE_DAC/WRITE_OWNER check to SMB2 SET_INFO SECURITY

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

EUVD-2026-48938

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

CVE-2026-64394

Summary: CVE-2026-64394 relates to the Linux kernel ksmbd SMB2 SET_INFO SECURITY path. The fix adds a per-handle access gate to prevent rewriting security descriptors when the handle lacks WRITE_DAC/WRITE_OWNER. Previously, SMB2_SET_INFO with InfoType SMB2_O_INFO_SECURITY could re-permission a fi...

SUSE CVE-2026-64138

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smbvalidatentsdsid helper to safely validate Owner SID and Group SID inside the NT Security Descriptor smbntsd retrieved from the parent directory...