PT-2026-116788

In the Linux kernel, the following vulnerability has been resolved: ip gre: Reject enabling collect metadata through changelink ipgre netlink parms can enable collect md on an existing GRE, GRETAP or ERSPAN device. Unlike newlink, changelink does not enforce metadata tunnel uniqueness. Converting...

SUSE CVE-2026-63829

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

CVE-2026-63829

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

CVE-2026-63829

The CVE-2026-63829 issue affects the Linux kernel’s GRE/IP tunnel handling: the changelink path for RTM_NEWLINK did not require CAP_NET_ADMIN in the tunnel’s link netns, allowing a caller with CAP_NET_ADMIN in dev_net(dev) but not in t->net to rewrite tunnels. The fix adds rtnl_dev_link_net_ca...

CVE-2026-63829 net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink

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

CVE-2026-63829

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

PT-2026-61145

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

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ipv4: ipgre: made ipgreheader more robust. A corresponding commit db5b4e39c4e6 has been made for “ip6gre: made ip6greheader more robust.” Over the years, syzbot has identified many ways in which the kernel can crash due to issues...

SUSE CVE-2026-23011

In the Linux kernel, the following vulnerability has been resolved: ipv4: ipgre: make ipgreheader robust Analog to commit db5b4e39c4e6 "ip6gre: make ip6greheader robust" Over the years, syzbot found many ways to crash the kernel in ipgreheader 1. This involves team or bonding drivers ability to...

CVE-2026-23011

CVE-2026-23011: In the Linux kernel, ip_gre: make ipgre_header() robust to prevent skb under_panic when a device (e.g., bonding/team) changes dev->needed_headroom or dev->hard_header_len. The crash described involves mld_newpack/mld_sendpack path with an skb that had insufficient headroom, ...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001483)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001483 advisory. In grehandleoffloads of ipgre.c, there is a possible page fault due to an invalid memory access. This could lead to local information disclosure with no additional...

PT-2026-4673

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the ipv4/ip gre module related to the ipgre header function. This issue can lead to kernel crashes when devices dynamically change their headroom or...

Linux ip_gre.c Gre Handle Offload

The vulnerability of the grehandleoffloads function in the ipgre.c component of the Linux operating system is related to the disclosure of information in the erroneous data area. Exploiting this vulnerability allows an attacker to gain access to confidential data...

GSD-2022-1003258 ip_gre: test csum_start instead of transport header

ipgre: test csumstart instead of transport header This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.47 by commit...

GSD-2022-1002589 ip_gre: test csum_start instead of transport header

ipgre: test csumstart instead of transport header This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.18.4 by commit...

PT-2022-31777

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.10.122 Description The issue is related to the ip gre module, where the test checks csum start instead of the transport header. This is an automated ID intended to aid in discovery of potential security...

PT-2022-31981

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.4.198 Description The issue is related to the ip gre module, where it tests csum start instead of the transport header. The actual impact and attack plausibility have not yet been proven. Recommendations For...

PT-2022-32114

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.19.247 Description The issue is related to the ip gre module, where the test checks csum start instead of the transport header. The actual impact and attack plausibility have not yet been proven. Recommendatio...

PT-2022-31202

Name of the Vulnerable Software and Affected Versions Linux Kernel versions v5.15 through v5.17.14 Description The issue is related to the ip gre module, where the test checks csum start instead of the transport header. This is an automated ID intended to aid in the discovery of potential securit...

PT-2022-31521

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.15.47 Description The issue is related to the ip gre module, where the test checks csum start instead of the transport header. The actual impact and attack plausibility have not yet been proven. Recommendation...