CVE-2026-98705wifi: mac80211: account proxy paths against the mesh path limit
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from ece1a2e7e86078c8379937b546e32cb7f25fcb6c before df072db65fdaa34ad15e1d66fc06a53e3e97f778; from ece1a2e7e86078c8379937b546e32cb7f25fcb6c before 3b75831ceee76d32bb8e7ddd241904f92f9b5407; from ece1a2e7e86078c8379937b546e32cb7f25fcb6c before 5a32409ed34a1868830899a5d2437f0b3bf3532c; from ece1a2e7e86078c8379937b546e32cb7f25fcb6c before a5f35d4b112af1415ff06bd501c8cc26cc08aa8b | CNA record |
References
- https://git.kernel.org/stable/c/df072db65fdaa34ad15e1d66fc06a53e3e97f778
- https://git.kernel.org/stable/c/3b75831ceee76d32bb8e7ddd241904f92f9b5407
- https://git.kernel.org/stable/c/5a32409ed34a1868830899a5d2437f0b3bf3532c
- https://git.kernel.org/stable/c/a5f35d4b112af1415ff06bd501c8cc26cc08aa8b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.