PT-2026-40453

Name of the Vulnerable Software and Affected Versions Linux ksmbd affected versions not specified Description A remote memory corruption issue exists in the ACL inheritance path. Remote clients with directory creation permissions can trigger a heap out-of-bounds read and subsequent heap corruptio...

USN-8180-6: Linux kernel (Raspberry Pi) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Drivers core; - Bluetooth drivers; - DMA engine subsystem; - GPU...

GhostLock: SMB Deny-Share Handles As a Zero-Privilege Availability Weapon

GhostLock demonstrates that a low-privileged Windows domain user with standard read access to an SMB share can produce ransomware-equivalent organizational availability impact with zero writes, zero encryption, and zero signals in every behavioral defense the modern enterprise security stack...

EUVD-2026-28684

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

EUVD-2026-28668

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix in-place encryption corruption in SMB2write SMB2write places write payload in iov1..n as part of rqiov. smb3inittransformrq pointer-shares rqiov, so cryptmessage encrypts iov1 in-place, replacing the original...

EUVD-2026-28634

In the Linux kernel, the following vulnerability has been resolved: smb: client: require a full NFS mode SID before reading mode bits parsedacl treats an ACE SID matching sidunixNFSmode as an NFS mode SID and reads sid.subauth2 to recover the mode bits. That assumes the ACE carries three...

CVE-2026-43379

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43377

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Don't log keys in SMB3 signing and encryption key generation When KSMBDDEBUGAUTH logging is enabled, generatesmb3signingkey and generatesmb3encryptionkey log the session, signing, encryption, and decryption key bytes. Remo...

CVE-2026-43378

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

CVE-2026-43362

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix in-place encryption corruption in SMB2write SMB2write places write payload in iov1..n as part of rqiov. smb3inittransformrq pointer-shares rqiov, so cryptmessage encrypts iov1 in-place, replacing the original...

CVE-2026-43378

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

UBUNTU-CVE-2026-43362

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix in-place encryption corruption in SMB2write SMB2write places write payload in iov1..n as part of rqiov. smb3inittransformrq pointer-shares rqiov, so cryptmessage encrypts iov1 in-place, replacing the original...

CVE-2026-43362

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix in-place encryption corruption in SMB2write SMB2write places write payload in iov1..n as part of rqiov. smb3inittransformrq pointer-shares rqiov, so cryptmessage encrypts iov1 in-place, replacing the original...

CVE-2026-43379 ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43379 ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43379

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43378

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

CVE-2026-43378

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

CVE-2026-43378 smb: server: fix use-after-free in smb2_open()

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...

CVE-2026-43378

CVE-2026-43378 affects the Linux kernel SMB server (smb2_open). A use-after-free arises because the opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window. Multiple sources (SUSE, Red Hat, Debian OSV, Ubuntu, Debian t...