CVE-2026-90153 ksmbd: bound smb_check_perm_dacl() ACE walks by DACL size

In the Linux kernel, the following vulnerability has been resolved: ksmbd: bound smbcheckpermdacl ACE walks by DACL size smbcheckpermdacl validates that the DACL fits inside the NT security descriptor, but then bounds its two ACE walks by the remaining NTSD length aclsize rather than the DACL's...

CVE-2026-90153

CVE-2026-90153 affects the Linux kernel ksmbd subsystem (in-kernel SMB server). The vulnerable function smb_check_perm_dacl() bounds its ACE walks by the remaining NT security descriptor length (acl_size) instead of the DACL's declared size (pdacl_size). An attacker with low privileges can craft ...

CVE-2026-90153 ksmbd: bound smb_check_perm_dacl() ACE walks by DACL size

In the Linux kernel, the following vulnerability has been resolved: ksmbd: bound smbcheckpermdacl ACE walks by DACL size smbcheckpermdacl validates that the DACL fits inside the NT security descriptor, but then bounds its two ACE walks by the remaining NTSD length aclsize rather than the DACL's...

CVE-2025-38561

CVE-2025-38561 ksmbd: condición de carrera en PreauhHashValue Si el cliente envía múltiples solicitudes de configuración de sesión a ksmbd, podría ocurrir una condición de carrera en PreauhHashValue...

KSMBD-CVE-2025-37947

PoC de CVE-2025-37947 para ksmbd Para más información, consulta el artículo aquí. Archivos bpf-tracer.sh - rastreador BPF de msgmsg CVE-2025-37947.c - exploit para CVE-2025-37947 proof-of-concept.c - disparador mínimo que causa la escritura fuera de límites OOB ksmbd.conf - configuración de...

UBUNTU-CVE-2026-89788

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix tree connection use-after-free in smb2treeconnect ksmbdtreeconnconnect publishes a new tree connection in sess-treeconns with a single reference and returns its pointer to smb2treeconnect. The handler continues to...

UBUNTU-CVE-2026-89792

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the pat...

CVE-2026-89788

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix tree connection use-after-free in smb2treeconnect ksmbdtreeconnconnect publishes a new tree connection in sess-treeconns with a single reference and returns its pointer to smb2treeconnect. The handler continues to...

CVE-2026-89792

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the pat...

ksmbrace

ksmbrace Investigación de vulnerabilidades en ksmbd , el servidor SMB3 del kernel de Linux fs/smb/server/. Fallos de atacante autenticado en las rutas de identificador durable y de resolución de rutas de ksmbd. El nombre alude al tema de la condición de carrera de esta línea de trabajo ver el UAF...

AZL-101355 CVE-2026-89794 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2readpipe allocates only the payload size, so the alignment padding can expose up to seven bytes of...

CVE-2026-89794

CVE-2026-89794 affects the ksmbd (SMB server) component in the Linux kernel . The root cause lies in smb2_read_pipe(): compound response handling extends the last response iov to an eight-byte boundary, but the function allocates only the payload size. This mismatch means the alignment padding ca...

CVE-2026-89794 ksmbd: zero pipe read compound padding

In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2readpipe allocates only the payload size, so the alignment padding can expose up to seven bytes of...

EUVD-2026-80394

In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2readpipe allocates only the payload size, so the alignment padding can expose up to seven bytes of...

AZL-101150 CVE-2026-89792 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the pat...

CVE-2026-89792

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the pat...

DEBIAN-CVE-2026-89788

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix tree connection use-after-free in smb2treeconnect ksmbdtreeconnconnect publishes a new tree connection in sess-treeconns with a single reference and returns its pointer to smb2treeconnect. The handler continues to...

CVE-2026-89788

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix tree connection use-after-free in smb2treeconnect ksmbdtreeconnconnect publishes a new tree connection in sess-treeconns with a single reference and returns its pointer to smb2treeconnect. The handler continues to...

AZL-101159 CVE-2026-89788 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix tree connection use-after-free in smb2treeconnect ksmbdtreeconnconnect publishes a new tree connection in sess-treeconns with a single reference and returns its pointer to smb2treeconnect. The handler continues to...

CVE-2026-89792

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the pat...