{"id":"CVE-2026-98526","published":"2026-10-18T16:17:04.063","lastModified":"2026-10-19T10:19:07.830","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nllc: reserve device headroom for allocated frames\n\nllc_alloc_frame() reserves link-layer headroom using the device type.\nThis is insufficient for stacked Ethernet devices such as VLAN devices,\nwhere vlan_dev_hard_header() pushes a VLAN header before the lower\ndevice's Ethernet header. An LLC response on such a device can\ntherefore underflow skb headroom in eth_header().\n\nUse LL_RESERVED_SPACE() to account for the device's actual required\nheadroom while preserving the existing LLC device-type check.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639","tags":[]},{"url":"https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603","tags":[]},{"url":"https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6","tags":[]},{"url":"https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05","tags":[]},{"url":"https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1","tags":[]},{"url":"https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52","tags":[]},{"url":"https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33","tags":[]},{"url":"https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}