USN-8851-3: Linux kernel (Azure) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network file system NFS server daemon; - IPv6 networking; - Netfilter; CVE-2025-38724, CVE-2026-53131, CVE-2026-532...

kernel: vxlan: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's VXLAN Virtual Extensible LAN implementation. A local attacker, with CAPNETADMIN network administration capability in one network namespace, could exploit an incorrect privilege check in the rtnl changelink path. This allows the attacker to modify the...

kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's ip6gre and ip6erspan tunnel drivers. The changelink functions in these drivers do not adequately verify administrative capabilities CAPNETADMIN across different network namespaces. This allows a local attacker, who has CAPNETADMIN in one network namespace bu...

kernel: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's IP Generic Routing Encapsulation ipgre component. This vulnerability allows a local attacker with network administration capabilities in one network namespace to modify a tunnel residing in a different network namespace where they lack privileges. This is du...

Astra Linux – Vulnerability in Chromium

The information leak in the Network component of Google Chrome prior to version 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to obtain sensitive information through a crafted HTML page. Chromium security severity: Medium...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nbd: The function genlunregisterfamily is called first in nbdcleanup. Otherwise, there may be a race between the removal of the module and the handling of the netlink command, which can lead to an oops as shown below: BUG: Kernel...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can result in the callback being fired later, thereby causing a use-after-free when using the channel. This vulnerability can be exploited by a malicious...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: NFS: Fixed potential buffer overflows in nfssysfslinkrpcclient. The name field is a char64 type, and the size of clnt-clprogram-name remains unknown. Invoking strcat directly will also lead to potential buffer overflows...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: dsa: clean up FDB, MDB, VLAN entries on unbind As explained in many places, such as commit b117e1e8a86d “net: dsa: delete dsalegacyfdbadd and dsalegacyfdbdel”, DSA is written under the assumption that higher layers perform...

Astra Linux – Vulnerability in NTP

In the mstolfp.c file within NTP 4.2.8p15, there is a buffer overflow vulnerability when a \0' character is added. An adversary may be able to attack a client ntpq process, but they cannot attack the ntpd process...

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 in Samba

All versions of Samba prior to 4.13.16 are vulnerable to a malicious client that can exploit the race condition of SMB1 or NFS to create a directory in an area of the server file system that is not exported under the share definition. Note that SMB1 must be enabled, or the share must also be...

Astra Linux – Vulnerability in Chromium

Insufficient validation of untrusted input in Variations in Google Chrome prior to 151.0.7922.72 allowed an attacker in a privileged network position to potentially exploit heap corruption via malicious network traffic. Chromium security severity: Medium...

Astra Linux – Vulnerability in Chromium

A cryptographic flaw in Google Chrome prior to version 151.0.7922.72 allowed an attacker in a privileged network position to bypass discretionary access control through malicious network traffic. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

Insufficient validation of untrusted input in Chromoting in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic. Chromium security severity: Low...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: BUG: NULL pointer dereference in the kernel, address: 0000000000000038 RIP efxnicupdatestats Abridged calltrace: efxef10updatestatspf, efxnetstats, devgetstats, devseqprintfstats The issue occurs when trying to retrieve the lates...

Astra Linux – Vulnerability in sane-backends

A heap buffer overflow in SANE backends before version 1.0.30 may allow a malicious device connected to the same local network as the victim to execute arbitrary code, known as GHSL-2020-084...

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: - In the net subsystem, do not delay the execution of dstentriesadd within dstrelease. - dstentriesadd uses data per-core that might be freed during the dismantling of ip6routenetexit, by calling dstentriesdestroy. Before...

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

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed a potential “struct net” leak in inet6rtmgetaddr. It appears that if the user space provides a correct IFATARGETNETNSID value, but no IFAADDRESS or IFALOCAL attributes are set, inet6rtmgetaddr will return -EINVAL, alo...

Astra Linux – Vulnerability in Python 2.7, Pypy

In Python 3.x versions prior to 3.5.10, 3.6.x versions prior to 3.6.12, 3.7.x versions prior to 3.7.9, and 3.8.x versions prior to 3.8.5, CRLF injection is allowed if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of...