CVE-2026-63952

A flaw was found in the Linux kernel's memfd component. When the SEALEXEC flag is used to create a memory file descriptor, the SEALWRITE flag is implicitly applied to prevent writing to executable memory. However, this implicit write protection is applied after checks that should deny writable...

USN-8580-1 accountsservice vulnerabilities

It was discovered that the Ubuntu-specific SetLanguage patch to AccountsService incorrectly handled dropping privileges. A local attacker could use this issue to execute arbitrary commands as an administrator. CVE-2026-61897 It was discovered that the Ubuntu-specific SetLanguage helpers for...

CVE-2026-63988

A flaw was found in the Linux kernel's bridge module. A local user, by interacting with the sysfs path for bridge port attributes, could trigger a 'sleep in atomic context' issue. This occurs because the brportstore function, while holding a lock that requires an atomic context, calls a function...

libssh: libssh: authentication bypass via missing GSSAPI principal check

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users...

CVE-2026-63917

A flaw was found in the Linux kernel's IPv6 Virtual Tunnel Interface vti6 component. An unprivileged local user, particularly within a user namespace, could exploit a vulnerability related to incorrect network namespace handling during the movement of a vti6 tunnel. This issue can lead to a kerne...

GHSA-55JH-FWMH-39M4 Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET SDK Microsoft.NET.Build.Containers. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A tampering...

Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET SDK Microsoft.NET.Build.Containers. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A tampering...

EUVD-2026-44394

Microsoft Security Advisory CVE-2026-50526 – .NET Tampering Vulnerability...

CVE-2026-15789 Malicious client can bypass destination directory validation on local sources upload

A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc...

CVE-2026-15789 Malicious client can bypass destination directory validation on local sources upload

A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc...

CVE-2026-15789 Malicious client can bypass destination directory validation on local sources upload

A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc...

CVE-2026-15789

CVE-2026-15789 affects the BuildKit daemon: a custom client with valid BuildKit API access can craft upload requests that bypass destination directory validation, allowing files to escape the BuildKit-controlled state directory. This is a local-privilege issue that requires access to the BuildKit...

EUVD-2026-44400

Microsoft Security Advisory CVE-2026-50650 – .NET Elevation of Privilege Vulnerability...

acl: Symlink traversal privilege escalation via libacl functions

A flaw was found in the acl package, specifically within its libacl pathname-based functions. A local attacker could exploit this vulnerability by using a symbolic link to replace a pathname component. This could allow the attacker to redirect access control list ACL read or write operations to...

CVE-2026-8933

A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilitie...

USN-8579-1: snapd vulnerabilities

James Henstridge discovered that snapd's default apparmor template did not restrict access to systemd-userdbd varlink interface. A local attacker could possibly use this issue to obtain sensitive information. CVE-2024-5300 Qualys discovered that snap-confine can be tricked to create...

CVE-2026-59851 Libssh: libssh: authentication bypass via missing gssapi principal check

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the gssapi-keyex process due to missing verification of the Kerberos principal's authorization for the requested local user. An attacker can gain unauthorized access as arbitrary users by exploiting this flaw...

EUVD-2026-46262

A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilitie...

CVE-2026-8933

A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilitie...