kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's ip6gre and ip6erspan tunnel drivers. The changelink functions in these drivers do not adequately verify administrative capabilities CAPNETADMIN across different network namespaces. This allows a local attacker, who has CAPNETADMIN in one network namespace bu...

kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's ip6gre and ip6erspan tunnel drivers. The changelink functions in these drivers do not adequately verify administrative capabilities CAPNETADMIN across different network namespaces. This allows a local attacker, who has CAPNETADMIN in one network namespace bu...

kernel: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink

A flaw was found in the Linux kernel's ip6gre and ip6erspan tunnel drivers. The changelink functions in these drivers do not adequately verify administrative capabilities CAPNETADMIN across different network namespaces. This allows a local attacker, who has CAPNETADMIN in one network namespace bu...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: - Ensured that erspanbasehdr is present in skb-head. The issue is that ip6erspanrcv and erspanrcv no longer ensures that erspanbasehdr is present in the linear part of skb-head before retrieving the @ver field from it. Add the...

SUSE CVE-2026-89562

In the Linux kernel, the following vulnerability has been resolved: ip6gre: fix hardware header length for NBMA tunnels ip6gretnllinkconfigroute accumulates the lower device's hardware header length into dev-hardheaderlen whenever headerops is set. This is incorrect for both users of headerops...

CVE-2026-89562: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ip6gre: fix hardware header length for NBMA tunnels ip6gretnllinkconfigroute accumulates the lower device's hardware header length into dev-hardheaderlen whenever headerops is set. This is incorrect for both users of headerops...

CVE-2026-72052

A flaw was found in the Linux kernel's ip6gre and ip6erspan tunnel drivers. The changelink functions in these drivers do not adequately verify administrative capabilities CAPNETADMIN across different network namespaces. This allows a local attacker, who has CAPNETADMIN in one network namespace bu...

EUVD-2026-59010

In the Linux kernel, the following vulnerability has been resolved: net: ip6gre: require CAPNETADMIN in the device netns for changelink ip6grechangelink and ip6erspanchangelink operate on at most two netns, devnetdev and the tunnel link netns t-net. They differ once the device is created in or...

Linux Distros Unpatched Vulnerability : CVE-2026-46120

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ip6gre: Use cached t-net in ip6erspanchangelink. After commit 5e72ce3e3980 net: ipv6: Use link netns in newlink of rtnllinkops, ip6erspannewlink correctly...

UBUNTU-CVE-2026-46120

In the Linux kernel, the following vulnerability has been resolved: ip6gre: Use cached t-net in ip6erspanchangelink. After commit 5e72ce3e3980 "net: ipv6: Use link netns in newlink of rtnllinkops", ip6erspannewlink correctly resolves the per-netns ip6gre hash via linknet. ip6erspanchangelink was...

PT-2026-44243

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A slab-use-after-free occurs in the ip6erspan changelink function. The issue arises because the function uses dev netdev instead of the cached t-net, which causes the tunnel to be insert...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-992662)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992662 advisory. In the Linux kernel, the following vulnerability has been resolved: erspan: do not use skbmacheader in ndostartxmit Drivers should not assume skbmacheaderskb ==...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990498)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990498 advisory. In the Linux kernel, the following vulnerability has been resolved: erspan: do not assume transport header is always set Rewrite tests in ip6erspantunnelxmit and...

SUSE CVE-2022-49691

In the Linux kernel, the following vulnerability has been resolved: erspan: do not assume transport header is always set Rewrite tests in ip6erspantunnelxmit and erspanfbxmit to not assume transport header is set. syzbot reported: WARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911...

UBUNTU-CVE-2022-49691

In the Linux kernel, the following vulnerability has been resolved: erspan: do not assume transport header is always set Rewrite tests in ip6erspantunnelxmit and erspanfbxmit to not assume transport header is set. syzbot reported: WARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911...

CVE-2022-49691

CVE-2022-49691 describes a Linux kernel vulnerability in ERSPAN handling where code incorrectly assumes skb_transport_header is always set, affecting ip6erspan_tunnel_xmit() and erspan_fb_xmit(). The issue can impact packet transmission in ERSPAN-related paths when the transport header is not pre...

CVE-2022-49691 erspan: do not assume transport header is always set

In the Linux kernel, the following vulnerability has been resolved: erspan: do not assume transport header is always set Rewrite tests in ip6erspantunnelxmit and erspanfbxmit to not assume transport header is set. syzbot reported: WARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911...

CVE-2022-49691: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: erspan: do not assume transport header is always set Rewrite tests in ip6erspantunnelxmit and erspanfbxmit to not assume transport header is set. syzbot reported: WARNING: CPU: 0 PID: 1350 at include/linux/skbuff.h:2911...

SUSE CVE-2024-35888

In the Linux kernel, the following vulnerability has been resolved: erspan: make sure erspanbasehdr is present in skb-head syzbot reported a problem in ip6erspanrcv 1 Issue is that ip6erspanrcv and erspanrcv no longer make sure erspanbasehdr is present in skb linear part skb-head before getting...

DEBIAN-CVE-2024-35888

In the Linux kernel, the following vulnerability has been resolved: erspan: make sure erspanbasehdr is present in skb-head syzbot reported a problem in ip6erspanrcv 1 Issue is that ip6erspanrcv and erspanrcv no longer make sure erspanbasehdr is present in skb linear part skb-head before getting...