PT-2026-35144 · Linux+1 · Linux Kernel+1
Published
2026-04-25
·
Updated
2026-06-05
·
CVE-2026-31684
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the
tcf csum act() function where nested VLAN headers are processed directly from skb->data when a socket buffer still contains in-payload VLAN tags. The system reads vlan->h vlan encapsulated proto and pulls VLAN HLEN bytes without verifying that the complete VLAN header is present in the linear area. If only a portion of an inner VLAN header is linearized, accessing h vlan encapsulated proto reads beyond the linear area, and the subsequent skb pull(VLAN HLEN) operation may violate socket buffer invariants.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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Related Identifiers
Affected Products
Linux Kernel
Rocky Linux