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...

EUVD-2026-80314

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 ksmbd: prevent out-of-bounds reads in share config responses

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 ksmbd: prevent out-of-bounds reads in share config responses

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

CVE-2026-89792 is an out-of-bounds read vulnerability in the ksmbd (in-kernel SMB server) component of the Linux kernel . The root cause is insufficient validation of IPC share configuration payload sizes before consuming variable-length fields: the veto list parsing is unbounded, and the separat...

EUVD-2026-80309

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...

CVE-2026-89788 ksmbd: fix tree connection use-after-free in smb2_tree_connect()

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 ksmbd: fix tree connection use-after-free in smb2_tree_connect()

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

CVE-2026-89788 is a use-after-free vulnerability in the Linux kernel's ksmbd (SMB server) subsystem, specifically in smb2_tree_connect() (fs/smb/server/smb2pdu.c). A race condition exists where ksmbd_tree_conn_connect() publishes a new tree connection with a single reference, but a concurrent ses...

SMB-LINUX-CVE-2025-37899

LinuxカーネルのksmbdにおけるUse-After-Freeの脆弱性（CVE-2025-37899） 説明 Linuxカーネルのksmbdモジュール（ネットワーク上のファイル共有のためのSMB（Server Message Block）プロトコルの実装を担う）に、 use-after-free タイプの脆弱性が発見されました。CVE-2025-37899として識別されたこの脆弱性は、権限が昇格されたリモートコード実行を可能にする可能性があります。 はじめに この発見は、研究者のSean...

Linux Distros Unpatched Vulnerability : CVE-2026-89794

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2readpipe allocates only the paylo...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: Fixed a slab out-of-bounds write in smbinheritdacl. The slab out-of-bounds write occurs because the offsets are larger than the allocation size of pntsd. This patch adds a check to validate the three offsets using the...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the ksmbd component of the Linux kernel, a high-performance in-kernel SMB server. The specific flaw resides in the handling of SMB2SESSIONSETUP commands. The issue arises due to a lack of control over resource consumption. An attacker can exploit this vulnerability to...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Validates the session ID and tree ID in compound requests. The function smb2getmsg in smb2getksmbdtcon and smb2checkusersession always returns the first command in a compound request’s headers. If SMB2TREECONNECTHE is the...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the ksmbd component of the Linux kernel, a high-performance in-kernel SMB server. The specific flaw occurs during the handling of SMB2LOGOFF commands. The issue arises from the lack of proper validation of a pointer before accessing it. An attacker can exploit this...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: A missing return value check bug has been fixed. In the smb2sendinterimresp function, if ksmbdallocworkstruct fails to allocate a node, it returns a NULL pointer to the inwork pointer. This can lead to an illegal memory...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: fixed the global out-of-bounds read in ksmbdnlpolicy. Similar to the reported issue see commit b33fb5b801c6 “net: qualcomm: rmnet: fixed global out-of-bounds in rmnetpolicy”, my local fuzzer discovered another global...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fixed the warning from kernelwriteiter 2110.972290 ------------ Cut here ------------ 2110.972301 WARNING: CPU: 3 PID: 735 at fs/readwrite.c:599 kernelwriteiter+0x21b/0x280 This patch does not allow writing to directories...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: A out-of-bounds read vulnerability in ksmbdvfsstreamread has been fixed. The offset from the client can be a negative value, which may lead to an out-of-bounds read of the streambuf...