CVE-2026-98705

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: account proxy paths against the mesh path limit Proxy-path churn can drive the interface path counter negative and let later mesh path additions exceed MESH_MAX_MPATHS. mesh_path_free_rcu() decrements the interface mpaths counter for entries from both the mesh and proxy path tables, but mpp_path_add() never reserves a slot in that counter. Removing or expiring a proxy path therefore returns a slot that was never charged. mesh_path_add() uses the same counter to enforce MESH_MAX_MPATHS, so once it falls below the number of installed paths the limit no longer holds. Reserve the shared quota before allocating a proxy path and release it on every unsuccessful addition. Mesh and proxy paths now share one 1024-entry budget, so mpp_path_add() can return -ENOSPC at that limit.

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Produits concernés

• Linux

Références

• https://git.kernel.org/stable/c/3b75831ceee76d32bb8e7ddd241904f92f9b5407
• https://git.kernel.org/stable/c/5a32409ed34a1868830899a5d2437f0b3bf3532c
• https://git.kernel.org/stable/c/a5f35d4b112af1415ff06bd501c8cc26cc08aa8b
• https://git.kernel.org/stable/c/c66ab4b94bb04c162485759196555e08c0965320
• https://git.kernel.org/stable/c/df072db65fdaa34ad15e1d66fc06a53e3e97f778

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories