PT-2026-94411 · Linux · Linux Kernel

CVE-2026-90063

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Published

2026-09-17

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Updated

2026-09-24

None

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Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An issue exists in the virtio-net component where a user can specify an arbitrary gso size in a packet crafted with an AF PACKET PACKET VNET HDR socket. If the gso size is set to a value smaller than 8, dividing the SKB length by this value can cause the 16-bit gso segs field to overflow. GSO (Generic Segmentation Offload) is a technique used to reduce CPU overhead by allowing the network card to handle the segmentation of large packets into smaller ones.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Related Identifiers

AZL-102951
CVE-2026-90063
OPENSUSE-SU-2026:11880-1

Affected Products

Linux Kernel