wifi: mac80211: account proxy paths against the mesh path limit
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.
CVE-2026-98705
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98705
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ece1a2e7e86078c8379937b546e32cb7f25fcb6c",
"lessThan": "c66ab4b94bb04c162485759196555e08c0965320",
"versionType": "git"
},
{
"status": "affected",
"version": "ece1a2e7e86078c8379937b546e32cb7f25fcb6c",
"lessThan": "df072db65fdaa34ad15e1d66fc06a53e3e97f778",
"versionType": "git"
},
{
"status": "affected",
"version": "ece1a2e7e86078c8379937b546e32cb7f25fcb6c",
"lessThan": "3b75831ceee76d32bb8e7ddd241904f92f9b5407",
"versionType": "git"
},
{
"status": "affected",
"version": "ece1a2e7e86078c8379937b546e32cb7f25fcb6c",
"lessThan": "5a32409ed34a1868830899a5d2437f0b3bf3532c",
"versionType": "git"
},
{
"status": "affected",
"version": "ece1a2e7e86078c8379937b546e32cb7f25fcb6c",
"lessThan": "a5f35d4b112af1415ff06bd501c8cc26cc08aa8b",
"versionType": "git"
}
],
"programFiles": [
"net/mac80211/mesh_pathtbl.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mac80211/mesh_pathtbl.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98705
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48918 · Revision 1
- Added to Heist Feed
- Publisher date