kernel: Linux kernel: Out-of-bounds write in VXLAN due to incorrect nexthop hash size leading to denial of service

A flaw was found in the Linux kernel's Virtual Extensible LAN VXLAN implementation. An attacker with elevated privileges CAPNETADMIN can exploit this vulnerability by configuring the system to accept and forward VXLAN packets. The issue arises from an incorrect nexthop hash size, where a 32-bit...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 9 : kernel (RHSA-2026:2573)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:2573 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: ath9khtc...

RHEL 9 : kernel-rt (RHSA-2026:2577)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:2577 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirement...

ROS-20260205-73-0013

A vulnerability in the drivers/net/vxlan/vxlancore.c module of the Linux operating systems kernel is related to race condition. Exploitation of the vulnerability may allow an intruder to affect the integrity of protected information...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-004835)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004835 advisory. In the Linux kernel, the following vulnerability has been resolved: net/tunnel: wait until all skuserdata reader finish before releasing the sock There is a race...

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-2025-21790)

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-2025-21790 advisory. - In the Linux kernel, the following vulnerability has been resolved: vxlan: check vxlanvnigroupinit return...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21716)

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-2025-21716 advisory. - In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix uninit-value in...

ROS-20260119-7318

A vulnerability in the vxlan component of the Linux operating system kernel involves the use of an uninitialized resource. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

ROS-20260119-7365

A vulnerability in the vxlaninit function of the drivers/net/vxlan/vxlancore.c component of the Linux operating system kernel is related to pointer dereferencing errors. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

CVE-2026-21910

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004409)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004409 advisory. A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003854)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003854 advisory. A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is...

CVE-2026-21910

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

CVE-2026-21910

CVE-2026-21910 affects Junos OS on EX4k Series and QFX5k Series with EVPN-VXLAN LAG/VPLAG. An unauthenticated, network-adjacent attacker can trigger a link flap, which in configurations with multiple load-balanced next-hops can cause Inter-VNI traffic to drop, resulting in DoS. Recovery requires ...

CVE-2026-21910 Junos OS: EX4k Series, QFX5k Series: In an EVPN-VXLAN configuration link flaps cause Inter-VNI traffic drop

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

CVE-2026-21910

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

EUVD-2026-2694

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

CVE-2026-21910: Improper Check for Unusual or Exceptional Conditions

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...