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In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: IPIP tunnel hardware offload is not yet support No driver supports for IPIP tunnels yet, give up early on setting up the hardware offload for this scenario. This patch adds a stub that can be enhanced to add more configuration that are currently not supported. As of now, the offload work is enqueued to the worker, then ignored if the hardware offload configuration is not supported. Check the NF_FLOW_HW flag to know if this entry was already tried once to be offloaded so this is not retried on refresh when unsupported. Move NF_FLOW_HW flag check to nf_flow_offload_add(). If this NF_FLOW_HW flag is unset the _del and _stats variants are never called. This can be updated later on to skip hardware offload work to be queued in case hardware offload does not support it.

The Linux kernel netfilter flowtable subsystem had a vulnerability where IPIP tunnel hardware offload was not supported due to no driver support, leading to early termination of hardware offload setup attempts. The patch adds a stub for future enhancements and prevents repeated offload attempts by checking the NF_FLOW_HW flag. This fix is part of a larger security update addressing multiple vulnerabilities across various kernel subsystems and architectures, including ARM64, x86, and others. The vulnerability has a CVSS 3.1 score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating network exploitable with no privileges required and high impact on confidentiality, integrity, and availability. The vendor advisory from Ubuntu confirms the availability of patches in kernel versions 7.0.0-31.31 and later for the linux-hwe-edge package and related kernels. Users must update to these versions to remediate the issue.

Detailed information about In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: IPIP tunnel hardware offload is not yet sup

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: IPIP tunnel hardware offload is not yet support No driver… (CVE-2026-64410) - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: IPIP tunnel hardware offload is not yet support No driver… (CVE-2026-64410)

Threats Tagged 'ghsa-grq9-9wcr-7jrj'