Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: devlink: fixed the netns refcount leak in devlinknlcmdreload. While preparing my patch series that includes netns refcount tracking, I discovered bugs in devlinknlcmdreload. Some error paths failed to release the refcount...

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/smc: Reduced Rtnl pressure in smcpnetcreatepnetidslist. Many syzbot reports indicate extreme Rtnl pressure, and many of them suggest that smc acquires Rtnl during the creation of netnames without any valid reason 1. This patc...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mr: Consolidate the ipmrcanfreetable checks. Guoyu Yin reported a crash in the ipmr netns cleanup path: WARNING: CPU: 2 PID: 14564 at net/ipv4/ipmr.c:440 ipmrfreetable net/ipv4/ipmr.c:440 inline WARNING: CPU: 2 PID: 14564 at...

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

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 found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: Timers for kernel sockets are properly terminated. We received various reports from syzbot that indicated that TCP timers would still fire even after the corresponding netns has been dismantled. Fortunately, Josef Bacik was...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The hooks related to netdev are always released after the notifier is removed. This resolves the issue where, when a veth device is released, the veth release callback also queues the peer netns device for...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RDMA/ipoib: Fixed a warning caused by destroying non-initial netnss. After the commit 5ce2dced8e95 “RDMA/ipoib: Set rtnllinkops for ipoib interfaces”, if the IPoIB device is moved to a non-initial netns, destroying that netns...

kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel

A flaw was found in the Linux kernel's xfrm-ESP and RxRPC subsystems. Unsafe in-place cryptographic processing of shared socket buffer fragments allows a low-privileged local attacker to corrupt page-cache contents of readable files, including sensitive system files, and gain root privileges. The...

kernel: espintcp: remove encap socket caching to avoid reference leak

In the Linux kernel, the following vulnerability has been resolved: espintcp: remove encap socket caching to avoid reference leak The current scheme for caching the encap socket can lead to reference leaks when we try to delete the netns. The reference chain is: xfrmstate - enacpsk - netns Since...

kernel: espintcp: remove encap socket caching to avoid reference leak

In the Linux kernel, the following vulnerability has been resolved: espintcp: remove encap socket caching to avoid reference leak The current scheme for caching the encap socket can lead to reference leaks when we try to delete the netns. The reference chain is: xfrmstate - enacpsk - netns Since...

CVE-2026-43091

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...

Linux Distros Unpatched Vulnerability : CVE-2026-43091

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all...

UBUNTU-CVE-2026-31692

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlinknscapable check for peer netns rtnlnewlink lacks a CAPNETADMIN capability check on the peer network namespace when creating paired devices veth, vxcan, netkit. This allows an unprivileged user with a...

CVE-2026-31692

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlinknscapable check for peer netns rtnlnewlink lacks a CAPNETADMIN capability check on the peer network namespace when creating paired devices veth, vxcan, netkit. This allows an unprivileged user with a...

CVE-2026-31692 rtnetlink: add missing netlink_ns_capable() check for peer netns

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlinknscapable check for peer netns rtnlnewlink lacks a CAPNETADMIN capability check on the peer network namespace when creating paired devices veth, vxcan, netkit. This allows an unprivileged user with a...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the absence of a CAPNETADMIN capability check for the peer network namespace in the rtnlnewlink...

Linux Distros Unpatched Vulnerability : CVE-2026-31692

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rtnetlink: add missing netlinknscapable check for peer netns rtnlnewlink lacks a CAPNETADMIN capability check on the peer network namespace when creating paired...

EUVD-2026-25472

In the Linux kernel, the following vulnerability has been resolved: wireguard: device: use exitrtnl callback instead of manual rtnllock in preexit wgnetnspreexit manually acquires rtnllock inside the pernet .preexit callback. This causes a hung task when another thread holds rtnlmutex - the...

CVE-2026-31579

In the Linux kernel, the following vulnerability has been resolved: wireguard: device: use exitrtnl callback instead of manual rtnllock in preexit wgnetnspreexit manually acquires rtnllock inside the pernet .preexit callback. This causes a hung task when another thread holds rtnlmutex - the...

CVE-2026-31579 wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit

In the Linux kernel, the following vulnerability has been resolved: wireguard: device: use exitrtnl callback instead of manual rtnllock in preexit wgnetnspreexit manually acquires rtnllock inside the pernet .preexit callback. This causes a hung task when another thread holds rtnlmutex - the...