CVE-2026-98526

In the Linux kernel, the following vulnerability has been resolved: llc: reserve device headroom for allocated frames llc_alloc_frame() reserves link-layer headroom using the device type. This is insufficient for stacked Ethernet devices such as VLAN devices, where vlan_dev_hard_header() pushes a VLAN header before the lower device's Ethernet header. An LLC response on such a device can therefore underflow skb headroom in eth_header(). Use LL_RESERVED_SPACE() to account for the device's actual required headroom while preserving the existing LLC device-type check.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-25)

Published

2026-10-18

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639
• https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603
• https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6
• https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05
• https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1

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