{"id":"CVE-2026-98705","summary":"wifi: mac80211: account proxy paths against the mesh path limit","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: account proxy paths against the mesh path limit\n\nProxy-path churn can drive the interface path counter negative and let\nlater mesh path additions exceed MESH_MAX_MPATHS.\n\nmesh_path_free_rcu() decrements the interface mpaths counter for entries\nfrom both the mesh and proxy path tables, but mpp_path_add() never\nreserves a slot in that counter. Removing or expiring a proxy path\ntherefore returns a slot that was never charged.\n\nmesh_path_add() uses the same counter to enforce MESH_MAX_MPATHS, so once\nit falls below the number of installed paths the limit no longer holds.\n\nReserve the shared quota before allocating a proxy path and release it on\nevery unsuccessful addition. Mesh and proxy paths now share one\n1024-entry budget, so mpp_path_add() can return -ENOSPC at that limit.","modified":"2026-10-19T02:47:13.042226926Z","published":"2026-10-18T15:46:35.520Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98705.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b75831ceee76d32bb8e7ddd241904f92f9b5407"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a32409ed34a1868830899a5d2437f0b3bf3532c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a5f35d4b112af1415ff06bd501c8cc26cc08aa8b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df072db65fdaa34ad15e1d66fc06a53e3e97f778"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98705.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98705"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ece1a2e7e86078c8379937b546e32cb7f25fcb6c"},{"fixed":"df072db65fdaa34ad15e1d66fc06a53e3e97f778"},{"fixed":"3b75831ceee76d32bb8e7ddd241904f92f9b5407"},{"fixed":"5a32409ed34a1868830899a5d2437f0b3bf3532c"},{"fixed":"a5f35d4b112af1415ff06bd501c8cc26cc08aa8b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98705.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"6.12.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.56"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98705.json"}}],"schema_version":"1.9.0"}