76 matches found
Linux Kernel Security Vulnerabilities
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...
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...
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...
PT-2026-37410
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference exists in the bridge component when CONFIG BRIDGE VLAN FILTERING is not set. In this configuration, the functions br vlan group and nbp vlan group return NULL...
SUSE CVE-2026-31531
In the Linux kernel, the following vulnerability has been resolved: ipv4: nexthop: allocate skb dynamically in rtmgetnexthop When querying a nexthop object via RTMGETNEXTHOP, the kernel currently allocates a fixed-size skb using NLMSGGOODSIZE. While sufficient for single nexthops and small...
EUVD-2026-25218
In the Linux kernel, the following vulnerability has been resolved: ipv4: nexthop: allocate skb dynamically in rtmgetnexthop When querying a nexthop object via RTMGETNEXTHOP, the kernel currently allocates a fixed-size skb using NLMSGGOODSIZE. While sufficient for single nexthops and small...
Azure Linux 3.0 Security Update: kernel (CVE-2025-37921)
The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-37921 advisory. - In the Linux kernel, the following vulnerability has been resolved: vxlan: vnifilter: Fix unlocked deletion ...
Azure Linux 3.0 Security Update: kernel (CVE-2025-38037)
The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-38037 advisory. - In the Linux kernel, the following vulnerability has been resolved: vxlan: Annotate FDB data races The 'used...
Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12
In the Linux kernel, the following vulnerability has been resolved: nexthop: It is now forbidden to change the FDB status of a nexthop device while the nexthop is in a group. The kernel prevents the creation of non-FDB nexthop groups that contain FDB nexthops. Example: ip nexthop add id 1 via...
EUVD-2023-60133
In the Linux kernel, the following vulnerability has been resolved: netlink: do not hard code device address lenth in fdb dumps syzbot reports that some netdev devices do not have a six bytes address 1 Replace ETHALEN by dev-addrlen. 1 Case of a device where dev-addrlen = 4 BUG: KMSAN:...
SUSE CVE-2025-40297
In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix use-after-free due to MST port state bypass syzbot reported1 a use-after-free when deleting an expired fdb. It is due to a race condition between learning still happening and a port being deleted, after all its...
EUVD-2025-201647
In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix use-after-free due to MST port state bypass syzbot reported1 a use-after-free when deleting an expired fdb. It is due to a race condition between learning still happening and a port being deleted, after all its...
DEBIAN-CVE-2025-40297
In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix use-after-free due to MST port state bypass syzbot reported1 a use-after-free when deleting an expired fdb. It is due to a race condition between learning still happening and a port being deleted, after all its...
Astra Linux – Vulnerability in Linux 6.12
In the Linux kernel, the following vulnerabilities have been resolved: vxlan: Fixed NPD issues when refreshing an FDB entry with a nexthop object. VXLAN FDB entries can point to either a remote destination or an FDB nexthop group. The latter is usually used in EVPN deployments where learning is...
Linux Distros Unpatched Vulnerability : CVE-2025-39980
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nexthop: Forbid FDB status change while nexthop is in a group The kernel forbids the creation of non-FDB nexthop groups with FDB nexthops: ip nexthop add id 1 v...
SUSE CVE-2025-39980
In the Linux kernel, the following vulnerability has been resolved: nexthop: Forbid FDB status change while nexthop is in a group The kernel forbids the creation of non-FDB nexthop groups with FDB nexthops: ip nexthop add id 1 via 192.0.2.1 fdb ip nexthop add id 2 group 1 Error: Non FDB nexthop...
CVE-2025-39980
In the Linux kernel, the following vulnerability has been resolved: nexthop: Forbid FDB status change while nexthop is in a group The kernel forbids the creation of non-FDB nexthop groups with FDB nexthops: ip nexthop add id 1 via 192.0.2.1 fdb ip nexthop add id 2 group 1 Error: Non FDB nexthop...
nexthop: Forbid FDB status change while nexthop is in a group
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UBUNTU-CVE-2025-39980
In the Linux kernel, the following vulnerability has been resolved: nexthop: Forbid FDB status change while nexthop is in a group The kernel forbids the creation of non-FDB nexthop groups with FDB nexthops: ip nexthop add id 1 via 192.0.2.1 fdb ip nexthop add id 2 group 1 Error: Non FDB nexthop...