CVE-2026-82920 Mattermost ABAC parent policy bypass via policy update endpoint

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.7 fail to enforce authorization boundaries on the access control policy update endpoint which allows a channel or team administrator to detach a system-assigned ABAC parent policy via a crafted PUT /api/v4/accesscontrolpolicies...

CVE-2026-82920 Mattermost ABAC parent policy bypass via policy update endpoint

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.7 fail to enforce authorization boundaries on the access control policy update endpoint which allows a channel or team administrator to detach a system-assigned ABAC parent policy via a crafted PUT /api/v4/accesscontrolpolicies...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Fat: Avoid underflow of the parent link count in rmdir. Corrupted FAT images may cause the directory inode to have an incorrect inlink value e.g., 2, even though subdirectories exist. rmdir then will unconditionally call...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: A potential out-of-bounds write has been avoided in the btrfsencodefh function. The btrfsencodefh function does not properly handle the three possible cases it processes. Before writing to the file handle fh, the function...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ceph: fixed a deadlock or deadcode issue caused by misuse of dget. The lock order between denty and its parent is incorrect; we should always ensure that the parent gets the lock first. However, since this deadcode is never used,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: procfs: Fixed a missing RCU protection when reading realparent in dotaskstat. When reading /proc/pid/stat, dotaskstat accesses task-realparent without proper RCU protection. This leads to the following sequence of events: cpu 0 c...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: clk: qcom: gfx3d: added a parent field to the parent request map. After committing d228ece36345 “clk: divider: removing roundrate in favor of determinerate”, determining the GFX3D clock rate became unstable. This occurred...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “landlock”: Fixed the “dparent” walk. The WARNONONCE function in “collectdomainaccesses” can be triggered when trying to link a root mount point. This does not actually work in practice because this directory is already mounted,...

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

In the Linux kernel, the following vulnerability has been resolved: Squashfs: fixed an issue where uninit-value was accessed in squashfsgetparent. Syzkaller reported a bug titled “KMSAN: uninit-value in squashfsgetparent”. This issue arises when openbyhandleat is called with a file handle...

Astra Linux – Vulnerability in node-glob-parent

This affects the glob-parent package before version 5.1.2. The enclosure regex used to check for strings ending with an enclosure containing a path separator is affected...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: clk: qcom: ipq8074: Fixed the PCI-E clock-related errors. Fixed kernel errors related to the PCI-E clock that are caused by a missing clock parent. pcie0rchngclksrc has numparents set to 2, but only one parent is actually set...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where inode lists were leaked during backref walking in findparentnodes. During backref walking, when findparentnodes is called, if we are dealing with a data extent and an error occurs while resolving...

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

In the Linux kernel, the following vulnerability has been resolved: net: arc: fixed the device for dmamapsingle/dmaunmapsingle ndev-dev and pdev-dev are not the same device; use ndev-dev.parent, which has dmamask. ndev-dev.parent is simply pdev-dev. Otherwise, the following issue will occur:...

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

In the Linux kernel, the following vulnerabilities have been resolved: media:v4l2-core: A potential resource leak was fixed in v4l2fwnodeparselink. If the fwnodegraphgetremoteendpoint function fails, fwnode is known to be NULL. Therefore, fwnodehandlePUT is a no-op. Instead, the reference taken...

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

In the Linux kernel, the following vulnerabilities have been resolved: - In the net:sched section, there is a fix for the order of qlen adjustment. - Changes to sch-q.qlen related to qdisctreereducebacklog need to occur before a call to that function. Otherwise, it may fail to notify the parent...

Astra Linux – Vulnerability in Firefox

By causing a transition on a parent node by removing a CSS rule, an invalid property for a marker could be applied, leading to memory corruption and potentially exploitable crashes. This vulnerability affects Firefox versions less than 87...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: USB: Roles – Fixed NULL pointer issue when referencing the module’s reference. In the current design, the USB role class driver will obtain a reference to the module of the usbroleswitch object after the user selects the...

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

In the Linux kernel, the following vulnerability has been resolved: net/sched: Abort tcmodifyqdisc if parent class does not exist Lion’s patch 1 uncovered an ancient bug in the qdisc API. Whenever a user creates or modifies a qdisc with another qdisc as its parent, the qdisc API will detect that...

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: fsnotify: Do not generate ACCESS/MODIFY events for special files in child processes. inotify/fanotify: Do not allow users who have no read access to a file to subscribe to events like INACCESS/INMODIFY. However, users can stil...

Astra Linux – Vulnerability in commons-io

In Apache Commons IO before version 2.7, when the FileNameUtils.normalize method was called with an improper input string, such as “//../foo” or “\..\foo”, the result would be the same value. This potentially allowed access to files in the parent directory, but not further up the path thus...