wifi: mac80211: account proxy paths against the mesh path limit

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98705
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:24 UTC
Updated2026-10-19 10:19:34 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ece1a2e7e86078c8379937b546e32cb7f25fcb6c df072db65fdaa34ad15e1d66fc06a53e3e97f778 git Not specified
CNA Linux Linux affected ece1a2e7e86078c8379937b546e32cb7f25fcb6c 3b75831ceee76d32bb8e7ddd241904f92f9b5407 git Not specified
CNA Linux Linux affected ece1a2e7e86078c8379937b546e32cb7f25fcb6c 5a32409ed34a1868830899a5d2437f0b3bf3532c git Not specified
CNA Linux Linux affected ece1a2e7e86078c8379937b546e32cb7f25fcb6c a5f35d4b112af1415ff06bd501c8cc26cc08aa8b git Not specified
CNA Linux Linux affected 3.2 Not specified
CNA Linux Linux unaffected 3.2 semver Not specified
CNA Linux Linux unaffected 6.12.113 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.56 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/df072db65fdaa34ad15e1d66fc06a53e3e97f778 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3b75831ceee76d32bb8e7ddd241904f92f9b5407 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5a32409ed34a1868830899a5d2437f0b3bf3532c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a5f35d4b112af1415ff06bd501c8cc26cc08aa8b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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