vrf: Fix a potential NPD when removing a port from a VRF

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CVE-2026-52925

A flaw was found in the Linux kernel's Virtual Routing and Forwarding VRF functionality. When a network device is removed from a VRF, a lack of proper synchronization can lead to a Null Pointer Dereference NPD. This issue can be triggered by a local user, potentially causing the system to crash,...

CVE-2026-52925

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

CVE-2026-52925

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

UBUNTU-CVE-2026-52925

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

CVE-2026-52925 vrf: Fix a potential NPD when removing a port from a VRF

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

EUVD-2026-38728

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

CVE-2026-52925

In the Linux kernel, the following vulnerability has been resolved: vrf: Fix a potential NPD when removing a port from a VRF RCU readers that identified a net device as a VRF port using netifisl3slave assume that a subsequent call to netdevmasterupperdevgetrcu will return a VRF device. They then...

PT-2026-51718

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Null Pointer Dereference NPD can occur when removing a port from a Virtual Routing and Forwarding VRF instance. RCU readers using netif is l3 slave may incorrectly assume that netdev...

MINI-VRF6-GCF5-X7HF

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CVE-2026-23304

A flaw was found in the Linux kernel. A local attacker could cause a null pointer dereference in the IPv6 routing subsystem when a slave device is being un-slaved from a Virtual Routing and Forwarding VRF instance. This vulnerability can lead to a system crash, resulting in a denial of service...

SUSE CVE-2026-23304

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

EUVD-2026-15242

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

CVE-2026-23304

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

CVE-2026-23304

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

UBUNTU-CVE-2026-23304

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

CVE-2026-23304

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal with this, but we lost the fallback to loopback in ip6rtpcpualloc -...

CVE-2026-23304

The connected advisories confirm CVE-2026-23304 affects the Linux kernel IPv6 routing code. Root cause: l3mdev_master_dev_rcu() can return NULL when a slave device is un-slaved from a VRF, and ip6_rt_get_dev_rcu() used by ip6_rt_pcpu_alloc() did not fall back to loopback, causing a NULL pointer d...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from failing to handle the unbinding of slave devices from the VRF context. This vulnerability may lead to...

Linux Distros Unpatched Vulnerability : CVE-2026-23304

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv6: fix NULL pointer deref in ip6rtgetdevrcu l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers deal wi...