CVE-2026-98526
Vulnérabilité non évaluée dans Linux (Linux)
CVSS 0.0 · Non évaluée
Linux•Linux•Versions : <=6.1.*, <=6.12.*, 6.18.55, 0, <2.6.34, bf9ae5386bca8836c16e69ab8fdbe46767d7452a, <16ceac2daa89dd16917bc488ab05b9dd6961a603, 6.12.112, 5.10.271, 6.6.158, <=5.10.*, <3361c93e417384ebf28003e0fb6d5304653d3b05, <=6.6.*, 6.1.189, 2.6.34, <018020f5a48cc86fdd6dc2d380f6c70443ae7639, <3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1, <=6.18.*, <7c38524b2b2456bd33cb360420da6cbf9cad1b33, 5.15.222, <=7.2.*, <72b5b9a28b996e09b8b5b944370c79851bb68f52, 7.2.9, <=*, <1937222c2511ac91377d39f28106c34734f5f8c6, <=5.15.*, <e06f8b6e27cc616d3c587e9784c4a033eb310a16, 7.3
Description
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.
Gravité et risque d'exploitation
CVE-2026-98526 obtient un score CVSS de 0.0/10, soit une gravité non évaluée.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 6.18.55, 0, <2.6.34, bf9ae5386bca8836c16e69ab8fdbe46767d7452a, <16ceac2daa89dd16917bc488ab05b9dd6961a603, 6.12.112, 5.10.271, 6.6.158, <=5.10.*, <3361c93e417384ebf28003e0fb6d5304653d3b05, <=6.6.*, 6.1.189, 2.6.34, <018020f5a48cc86fdd6dc2d380f6c70443ae7639, <3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1, <=6.18.*, <7c38524b2b2456bd33cb360420da6cbf9cad1b33, 5.15.222, <=7.2.*, <72b5b9a28b996e09b8b5b944370c79851bb68f52, 7.2.9, <=*, <1937222c2511ac91377d39f28106c34734f5f8c6, <=5.15.*, <e06f8b6e27cc616d3c587e9784c4a033eb310a16, 7.3) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://git.kernel.org/stable/c/018020f5a48cc86fdd6dc2d380f6c70443ae7639
- https://git.kernel.org/stable/c/3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1
- https://git.kernel.org/stable/c/7c38524b2b2456bd33cb360420da6cbf9cad1b33
- https://git.kernel.org/stable/c/1937222c2511ac91377d39f28106c34734f5f8c6
- https://git.kernel.org/stable/c/16ceac2daa89dd16917bc488ab05b9dd6961a603
- https://git.kernel.org/stable/c/e06f8b6e27cc616d3c587e9784c4a033eb310a16
- https://git.kernel.org/stable/c/3361c93e417384ebf28003e0fb6d5304653d3b05
- https://git.kernel.org/stable/c/72b5b9a28b996e09b8b5b944370c79851bb68f52