RLSA-2026:39179 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net: bridge: use a stable FDB dst snapshot in RCU readers CVE-2026-46086 kernel: xfrm: defensively unhash xfrmstate lists in xfrmstatedelete CVE-2026-46116 kernel: XFS data corruption usi...

kernel: net: bridge: use a stable FDB dst snapshot in RCU readers

A flaw was found in the Linux kernel. Inconsistent handling of local Forwarding Database FDB entries in the bridge networking component's RCU Read-Copy-Update readers can lead to a null-pointer dereference. A local attacker could exploit this by triggering a concurrent update to an FDB entry,...

kernel security, bug fix, and enhancement update

An update is available for kernel. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

kernel: net: bridge: use a stable FDB dst snapshot in RCU readers

A flaw was found in the Linux kernel. Inconsistent handling of local Forwarding Database FDB entries in the bridge networking component's RCU Read-Copy-Update readers can lead to a null-pointer dereference. A local attacker could exploit this by triggering a concurrent update to an FDB entry,...

RockyLinux 9 : kernel (RLSA-2026:38491)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:38491 advisory. kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling CVE-2026-22979 kernel: rtmutex: Use waiter::task instead of current...

kernel: net: bridge: use a stable FDB dst snapshot in RCU readers

A flaw was found in the Linux kernel. Inconsistent handling of local Forwarding Database FDB entries in the bridge networking component's RCU Read-Copy-Update readers can lead to a null-pointer dereference. A local attacker could exploit this by triggering a concurrent update to an FDB entry,...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: clear page-private in freepagesprepare CVE-2026-43303 In the Linux kernel, the following vulnerability has been resolved: lib/crypto: mpi: Fix integer underflow in mpireadrawfromsgl CVE-2026-43492 In...

CVE-2026-46086

A flaw was found in the Linux kernel. Inconsistent handling of local Forwarding Database FDB entries in the bridge networking component's RCU Read-Copy-Update readers can lead to a null-pointer dereference. A local attacker could exploit this by triggering a concurrent update to an FDB entry,...

UBUNTU-CVE-2026-46086

In the Linux kernel, the following vulnerability has been resolved: net: bridge: use a stable FDB dst snapshot in RCU readers Local FDB entries can be rewritten in place by fdbdeletelocal, which updates f-dst to another port or to NULL while keeping the entry alive. Several bridge RCU readers...

CVE-2026-46086 net: bridge: use a stable FDB dst snapshot in RCU readers

In the Linux kernel, the following vulnerability has been resolved: net: bridge: use a stable FDB dst snapshot in RCU readers Local FDB entries can be rewritten in place by fdbdeletelocal, which updates f-dst to another port or to NULL while keeping the entry alive. Several bridge RCU readers...

EUVD-2026-32469

In the Linux kernel, the following vulnerability has been resolved: net: bridge: use a stable FDB dst snapshot in RCU readers Local FDB entries can be rewritten in place by fdbdeletelocal, which updates f-dst to another port or to NULL while keeping the entry alive. Several bridge RCU readers...

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 bridge FDB entries not using stable dst snapshots during RCU reading operations. This vulnerabili...

EUVD-2026-27610

In the Linux kernel, the following vulnerability has been resolved: bridge: guard local VLAN-0 FDB helpers against NULL vlan group When CONFIGBRIDGEVLANFILTERING is not set, brvlangroup and nbpvlangroup return NULL brprivate.h stub definitions. The BRBOOLOPTFDBLOCALVLAN0 toggle code is compiled...

CVE-2026-43100

CVE-2026-43100 covers a Linux kernel bridge issue where, if CONFIG_BRIDGE_VLAN_FILTERING is not set, br_vlan_group() and nbp_vlan_group() may return NULL and the code path in br_fdb_delete_locals_per_vlan_port() / br_fdb_insert_locals_per_vlan_port() dereferences a NULL vlan group pointer. Connec...

DEBIAN-CVE-2025-37864

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 given the assumption that higher layers have...