CVE-2026-31478 ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: replace hardcoded hdr2len with offsetof in smb2calcmaxoutbuflen After this commit e2b76ab8b5c9 "ksmbd: add support for read compound", response buffer management was changed to use dynamic iov array. In the new design,...

CVE-2026-31477 ksmbd: fix memory leaks and NULL deref in smb2_lock()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leaks and NULL deref in smb2lock smb2lock has three error handling issues after listdel detaches smblock from locklist at nocheckcl: 1 If vfslockfile returns an unexpected error in the non-UNLOCK path, goto out...

CVE-2026-31433

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potencial OOB in getfileallinfo for compound requests When a compound request consists of QUERYDIRECTORY + QUERYINFO FILEALLINFORMATION and the first command consumes nearly the entire maxtranssize, getfileallinfo woul...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013450)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013450 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.18 before 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the non-padding case in smb2writ...

PT-2026-34382

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The smb2 lock function in the ksmbd module contains three error handling issues. First, if vfs lock file returns an unexpected error in the non-UNLOCK path, the smb lock and its flock ar...

PT-2026-34383

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ksmbd module where the smb2 calc max out buf len function used a hardcoded magic number for the hdr2 len argument instead of the correct offset of the Buffer field...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013445)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013445 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2TREECONNECT...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013497)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013497 advisory. A use-after-free flaw was found in smb2isstatusiotimeout in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local...

Linux Distros Unpatched Vulnerability : CVE-2026-31477

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix memory leaks and NULL deref in smb2lock smb2lock has three error handling issues after listdel detaches smblock from locklist at nocheckcl: 1 If...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013496)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013496 advisory. In the Linux kernel, the following vulnerability has been resolved: cifs: prevent bad output lengths in smb2ioctlqueryinfo When calling smb2ioctlqueryinfo with...

Linux Distros Unpatched Vulnerability : CVE-2026-31478

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: ksmbd: replace hardcoded hdr2len with offsetof in smb2calcmaxoutbuflen After this commit...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013416)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013416 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT. Tenabl...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-010715)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010715 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT. Tenabl...

SUSE-SU-2026:1274-1 Security update for the Linux Kernel (Live Patch 19 for SUSE Linux Enterprise 15 SP6)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.84 fixes various security issues The following security issues were fixed: - CVE-2025-71120: SUNRPC: svcauthgss: avoid NULL deref on zero length gsstoken in gssreadproxyverf bsc1256780. - CVE-2026-22999: net/sched: schqfq: do not fr...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006728)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006728 advisory. In the Linux kernel, the following vulnerability has been resolved: cifs: Fix UAF in cifsdemultiplexthread There is a UAF when xfstests on cifs: BUG: KASAN:...

SUSE SLES15 Security Update : kernel RT (Live Patch 9 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:1187-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1187-1 advisory. This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.31 fixes various security issues The following security issues were fixed: -...

CVE-2026-31409

In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn-binding on failed binding request When a multichannel SMB2SESSIONSETUP request with SMB2SESSIONREQFLAGBINDING fails ksmbd sets conn-binding = true but never clears it on the error path. This leaves the connectio...

CVE-2026-31409 ksmbd: unset conn->binding on failed binding request

In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn-binding on failed binding request When a multichannel SMB2SESSIONSETUP request with SMB2SESSIONREQFLAGBINDING fails ksmbd sets conn-binding = true but never clears it on the error path. This leaves the connectio...

CVE-2026-23428

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of shareconf in compound request smb2getksmbdtcon reuses work-tcon in compound requests without validating tcon-tstate. ksmbdtreeconnlookup checks tstate == TREECONNECTED on the initial lookup path, but...

ROS-20260403-73-0002

A vulnerability in the smb2sesssetup function of the fs/smb/server/smb2pdu.c module of the ksmbd component of the Linux operating system kernel is related to the ability to use memory after it has been freed. Exploitation of the vulnerability could allow an attacker acting remotely to cause a...