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CVE-2024-36933 is an improper socket-buffer state restoration flaw in the Linux kernel Network Service Header (NSH) Generic Segmentation Offload path. In nsh_gso_segment(), segmentation of encapsulated traffic could leave skb->data positioned at the NSH header rather than the outer header and could restore skb->mac_header and skb->network_header using offsets invalidated when lower-layer segmentation shifted linear-buffer data. Nested NSH-over-Ethernet encapsulation can also cause header pulling from the middle of an outer header. The corrected implementation derives the outer-header position relative to the inner header and restores the socket buffer data pointer, MAC-header pointer, and protocol to the outer-header state after segmentation.
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Linux kernel NSH segmentation issue addressed by restoring socket-buffer protocol, data, and MAC-header fields for the outer header in nsh_gso_segment().
Unknown
A Linux kernel NSH (Network Service Header) vulnerability in nsh_gso_segment() involving restoration of skb protocol, data, and MAC-header fields for the outer header. The issue has been resolved and was assessed by an automated check as potentially valid with low impact.
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Cross-references every affected SKU, including bundled OEM variants.
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