kernel: ipv6: sit: reload inner IPv6 header after GSO offloads

A flaw was found in the Linux kernel's Simple Internet Transition SIT tunnel driver for IPv6. When processing network traffic with Generic Segmentation Offload GSO enabled, the driver may use a stale pointer to the inner IPv6 header after the socket buffer skb head has been reallocated. This can...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100749)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100749 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 head...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-100114)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100114 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 head...

AZL-90734 CVE-2026-53228 affecting package kernel for versions less than 6.6.143.1-1

In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 header pointer at function entry and continues using it after iptunnelhandleoffloads. For GSO skbs, iptunnelhandleoffloads calls...

CVE-2026-53228

The CVE-2026-53228 entry documents a vulnerability in the Linux kernel SIT IPv6 tunnel driver. When GSO offloads are used, the code may keep a stale pointer to the inner IPv6 header after skb header unclone and potential headroom reallocation, leading to reads from freed memory. A fix reloads the...

EUVD-2026-39319

In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 header pointer at function entry and continues using it after iptunnelhandleoffloads. For GSO skbs, iptunnelhandleoffloads calls...

CVE-2026-53228: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 header pointer at function entry and continues using it after iptunnelhandleoffloads. For GSO skbs, iptunnelhandleoffloads calls...

PT-2026-52323

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SIT Simple Internet Tunneling implementation for IPv6. The ipip6 tunnel xmit function caches the inner IPv6 header pointer at the start of the function and continu...