Important: Red Hat Security Advisory: samba security update

An update for samba is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions

A privilege escalation vulnerability was found in the Linux kernel's CIFS client implementation. This could allow a local attacker to impersonate other users, bypass authentication in SMB mount operations, and potentially gain unauthorized access to network file shares or escalate privileges...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cifs: A use-after-free bug has been fixed in refreshcacheworker. The UAF bug occurred because we were putting DFS root sessions into cifsumount while the DFS cache refresher was executing. We have ensured that DFS root session...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: cifs: The xid leak in cifscopyfilerange has been fixed. If the file is used by swap, before returning -EOPNOTSUPP, the xid should be freed. Otherwise, the xid will be leaked...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: cifs: A memory leak was fixed when using fscache. If the condition “index == nextcached” is encountered, a reference count of the struct page is leaked. This issue is fixed by using readaheadfolio, which handles the reference cou...

kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions

A privilege escalation vulnerability was found in the Linux kernel's CIFS client implementation. This could allow a local attacker to impersonate other users, bypass authentication in SMB mount operations, and potentially gain unauthorized access to network file shares or escalate privileges...

kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions

A privilege escalation vulnerability was found in the Linux kernel's CIFS client implementation. This could allow a local attacker to impersonate other users, bypass authentication in SMB mount operations, and potentially gain unauthorized access to network file shares or escalate privileges...

ROS-20260608-73-0001

The vulnerability of the cifsgetspnegokey function in the cifs.upcall tool of the cifs-utils package in Linux kernel systems is related to the lack of authentication for the critical function. Exploiting this vulnerability can allow an attacker to elevate their privileges to root and execute...

CVE-2026-41013 Tenant-controlled comma smuggles arbitrary CIFS mount options

Input validation bypass in SMB volume mount handling in CloudFoundry Foundation diego-release allows low-privileged CF space developer to inject arbitrary kernel CIFS mount options via bypassing the mount-option allowlist, enabling privilege escalation and security control bypass on multi-tenant...

UBUNTU-CVE-2026-46243

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: cifs: The xid leak in cifsflock has been fixed. If flock is not used, before returning -ENOLCK, the xid should be freed; otherwise, the xid will be leaked...

Astra Linux - уязвимость в linux-5.10, linux

A denial-of-service DOS issue was detected in the smb2ioctlqueryinfo function of the Linux kernel, within the fs/cifs/smb2ops.c Common Internet File System. This issue arises due to an incorrect return value from the memdupuser function. This flaw allows a local, privileged attacker with...

Astra Linux - уязвимость в linux-5.15, linux-6.1

A use-after-free flaw was discovered in the setupasyncwork function in the KSMBD implementation of the in-kernel Samba server and CIFS services in the Linux kernel. This issue could allow an attacker to crash the system by accessing freed resources...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021544)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021544 advisory. In the Linux kernel, the following vulnerability has been resolved: cifs: fix oops during encryption When running xfstests against Azure the following oops occurred ...

CVE-2026-43215

A flaw was found in the Linux kernel's Common Internet File System CIFS implementation. Incorrect locking mechanisms were used for tcon fields, where the cifstcpseslock was applied too broadly instead of more granular locks. This improper locking could lead to concurrency issues within the kernel...

EUVD-2026-27777

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to use the cifstcpseslock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srvlock, seslock and tclock to protect fields within the...

CVE-2026-43215

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to use the cifstcpseslock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srvlock, seslock and tclock to protect fields within the...

CVE-2026-43215

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to use the cifstcpseslock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srvlock, seslock and tclock to protect fields within the...

PT-2026-37555

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the CIFS component where cifs tcp ses lock was used to protect various objects, including tcon fields, instead of using more granular locks. This caused unnecessary...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the incorrect setting of the CIFSMOUNTPOSIXPATHS bit when mounting SMB1 under UNIX. This can lead to th...