CVE-2026-98526
llc: reserve device headroom for allocated frames
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 018020f5a48cc86fdd6dc2d380f6c70443ae7639 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 7c38524b2b2456bd33cb360420da6cbf9cad1b33 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 1937222c2511ac91377d39f28106c34734f5f8c6 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 16ceac2daa89dd16917bc488ab05b9dd6961a603 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < e06f8b6e27cc616d3c587e9784c4a033eb310a16 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 3361c93e417384ebf28003e0fb6d5304653d3b05 bf9ae5386bca8836c16e69ab8fdbe46767d7452a < 72b5b9a28b996e09b8b5b944370c79851bb68f52
Linux / Linux
2.6.34
References
git.kernel.org: https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639 git.kernel.org: https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1 git.kernel.org: https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33 git.kernel.org: https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6 git.kernel.org: https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603 git.kernel.org: https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16 git.kernel.org: https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05 git.kernel.org: https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52