Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The rcubarrier function was called in ksmbdserverexit. The bug is triggered due to racing between closing a connection and the rmmod operation. In ksmbd, rcubarrier is not called at the time of module unloading, so nothing...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Do not log keys during SMB3 signing and encryption key generation. When the KSMBDDEBUGAUTH logging option is enabled, the functions generatesmb3signingkey and generatesmb3encryptionkey log the bytes of the session, signing...

Astra Linux – Vulnerability in Linux 6.1

A out-of-bounds read vulnerability was discovered in smb2dumpdetail in the fs/smb/client/smb2ops.c file within the Linux kernel. This issue could allow a local attacker to crash the system or leak internal kernel information...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fixed the issue where a memory leak occurred after the session was logged off. There is an issue with the interaction between SMB2 session logging out and SMB2 session setup. This issue causes a memory leak after the sessi...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb/client: Avoid referencing rdata=NULL in smb2newreadreq. This occurs when calling from SMB2read while using rdma, and when reaching the rdmareadwritethreshold...

Astra Linux – Vulnerability in Linux 5.15

A use-after-free flaw was discovered in the smb2isstatusiotimeout function in CIFS within the Linux kernel. After CIFS transfers response data via a system call, there are still local variables pointing to the memory region. If the system call frees those pointers faster than CIFS uses them, CIFS...

Astra Linux – Vulnerability in Linux 5.15

A issue was discovered in the Linux kernel before version 6.3.8. In the file fs/smb/server/connection.c of ksmbd, the relationship between the length field of the NetBIOS header and the sizes of the SMB headers is not validated, as handled through the pdudsize function in ksmbdconnhandlerloop. Th...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate command request size In commit 2b9b8f3b68ed “ksmbd: validate command payload size”, except for the SMB2OPLOCKBREAKHE command, the request size of other commands is not checked—this is not expected. This issue need...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed a double-free race that occurs when the mount operation fails in cifsgetroot When cifsgetroot fails during cifssmb3domount, we call deactivatelockedsuper, which eventually calls delayedfree, which frees the context...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: smb: client: The split caching of bitfields in cachedfid was introduced to avoid race conditions involving shared-byte registers. The functions isopen, haslease, and onlist are stored in the same bitfield byte within the struc...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed an oops during encryption When running xfstests against Azure, the following oops occurred on an arm64 system: Unable to handle kernel writes to read-only memory at virtual address ffff0001221cf000 Mem abort info:...

Astra Linux – Vulnerability in Samba

A flaw was discovered in the way Samba implemented SMB1 authentication. An attacker could exploit this flaw to retrieve the plain-text password sent over the network, even if Kerberos authentication was required...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fixed issues with OOBs when building SMB2IOCTL requests. When encryption is used, whether enforced by the server or when using the ‘seal’ mount option, the client will squash all compound request buffers into a singl...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: smb: client: Fixed a use-after-free in cifsfilldirent. There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: smb: client: fix double-free of TCPServerInfo::hostname When shutting down the server in cifsputtcpsession, the cifsd thread might reconnect to multiple DFS targets before realizing that it should exit the loop. As a result,...

Astra Linux – Vulnerability in curl

In some cases, curl may reuse the wrong connection for SMB transfers. curl features a pool of recent connections, so subsequent requests can reuse an existing connection to avoid additional overhead. When reusing a connection, a set of criteria must be met. Due to a logical error in the code, a...

CVE-2026-68388

CVE-2026-68388 (Linux kernel SMB client): The smb3_simple_fallocate_range() path can mis-handle allocated ranges returned by the server, causing holes to be skipped and writes to fail with ENOSPC. The issue arises when a server-provided allocated range overlaps the current fallocate offset and st...

EUVD-2026-55444

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate DFS referral PathConsumed parsedfsreferrals validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a...

Security Bulletin:Vulnerability in Curl affects IBM Netezza Appliance

Summary The Curl package is used by IBM Netezza Appliance. IBM Netezza Appliance has addressed the applicable CVECVE-2026-3805 Vulnerability Details CVEID:CVE-2026-3805 DESCRIPTION: When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already...

CVE-2026-54206

Tobit Laboratories AG TeamDavid's Webbox 's sending email, fax, SMS, etc. functionality accepts a @@INCLUDE command, which can be set to network locations using UNC paths e.g., “\Server\Share”. The server processes these paths without validation, resulting in outbound connection attempts to...