CVE-2026-98526: llc: reserve device headroom for allocated frames
Published Oct 18, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
llc: reserve device headroom for allocated frames
llcallocframe() reserves link-layer headroom using the device type. This is insufficient for stacked Ethernet devices such as VLAN devices, where vlandevhardheader() pushes a VLAN header before the lower device's Ethernet header. An LLC response on such a device can therefore underflow skb headroom in ethheader().
Use LLRESERVEDSPACE() to account for the device's actual required headroom while preserving the existing LLC device-type check.
Affected Software
1 affected component
Linux Linux kernel
Event History
Oct 18, 2026
CVE Published
via MITRE·03:17 PM
Data Sourced
via MITRE·03:17 PM
Description
Data Sourced
via NVD·04:17 PM
Description