CVE-2026-68142

In the Linux kernel, the following vulnerability has been resolved: geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns geneve-net. They differ once the device is created in or moved to a netns...

CVE-2026-68299 vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets

In the Linux kernel, the following vulnerability has been resolved: vmxnet3: fix BUGON in vmxnet3gethdrlen for Geneve packets vmxnet3gethdrlen assumes gdesc-rcd.v4/v6/tcp always describe the outer header, but for a Geneve-encapsulated packet the device can set them based on the inner header...

CVE-2026-68299

Summary: CVE-2026-68299 affects the Linux kernel vmxnet3 driver. When handling Geneve-encapsulated packets, vmxnet3_get_hdr_len() may misinterpret header fields because gdesc->rcd.v4/v6/tcp describe the outer header, while the inner header can differ. The completion descriptor’s VMXNET3_RCD_HD...

CVE-2026-68299 vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets

In the Linux kernel, the following vulnerability has been resolved: vmxnet3: fix BUGON in vmxnet3gethdrlen for Geneve packets vmxnet3gethdrlen assumes gdesc-rcd.v4/v6/tcp always describe the outer header, but for a Geneve-encapsulated packet the device can set them based on the inner header...

EUVD-2026-55400

In the Linux kernel, the following vulnerability has been resolved: vmxnet3: fix BUGON in vmxnet3gethdrlen for Geneve packets vmxnet3gethdrlen assumes gdesc-rcd.v4/v6/tcp always describe the outer header, but for a Geneve-encapsulated packet the device can set them based on the inner header...

CVE-2026-68142

The CVE concerns the Linux kernel geneve driver. A local attacker with CAP_NET_ADMIN in one network namespace can bypass permission checks and modify a geneve network device in a different namespace, potentially enabling unauthorized network configuration changes or disruption. The fix gates the ...

CVE-2026-68142 geneve: require CAP_NET_ADMIN in the device netns for changelink

In the Linux kernel, the following vulnerability has been resolved: geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns geneve-net. They differ once the device is created in or moved to a netns...

EUVD-2026-55525

In the Linux kernel, the following vulnerability has been resolved: geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns geneve-net. They differ once the device is created in or moved to a netns...

CVE-2026-68142 geneve: require CAP_NET_ADMIN in the device netns for changelink

In the Linux kernel, the following vulnerability has been resolved: geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns geneve-net. They differ once the device is created in or moved to a netns...

PT-2026-69699

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the vmxnet3 get hdr len function where it incorrectly assumes that gdesc-rcd.v4, gdesc-rcd.v6, and gdesc-rcd.tcp always describe the outer header. For...

CVE-2026-68299: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: vmxnet3: fix BUGON in vmxnet3gethdrlen for Geneve packets vmxnet3gethdrlen assumes gdesc-rcd.v4/v6/tcp always describe the outer header, but for a Geneve-encapsulated packet the device can set them based on the inner header...

CVE-2026-68142: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns geneve-net. They differ once the device is created in or moved to a netns...

Linux Distros Unpatched Vulnerability : CVE-2026-68142

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - geneve: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the sticky underlay netns...

Linux Distros Unpatched Vulnerability : CVE-2026-68299

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - vmxnet3: fix BUGON in vmxnet3gethdrlen for Geneve packets vmxnet3gethdrlen assumes gdesc-rcd.v4/v6/tcp always describe the outer header, but for a...

PT-2026-69542

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the geneve module where the changelink operation does not properly verify permissions across different network namespaces netns. Specifically, the rtnl changelink path...

SUSE CVE-2026-63993

In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached iphdr value after skbtunnelcheckpmtu skbtunnelcheckpmtu can change skb-head. Reusing oldiph afer skbtunnelcheckpmtu can cause an UAF. Use instead iphdrskb as done in drivers/net/bareudp.c and...

RHEL 8 : kernel (RHSA-2026:26535)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26535 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: geneve: Fix use-after-free in...

RHEL 8 : kernel (RHSA-2026:26570)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26570 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: geneve: Fix use-after-free in...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

kernel: geneve: Fix use-after-free in geneve_find_dev().

A use-after-free vulnerability exists in the Linux kernel. When devnet is dismantled, the geneveexitbatchrtnl function calls unregisternetdevicequeue for each device in the network namespace. Later, when the device is freed, it is still linked to the backend UDP socket in the network namespace...