VulnerabilityPublished 18 Oct 2026Updated 21 Oct 2026

CVE-2026-98705: Linux kernel · wifi: mac80211: account proxy paths against the mesh path limit

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in df072db65fdaa34ad15e1d66fc06a53e3e97f778 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in df072db65fdaa34ad15e1d66fc06a53e3e97f778, c66ab4b94bb04c162485759196555e08c0965320, a5f35d4b112af1415ff06bd501c8cc26cc08aa8b +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < df072db65fdaa34ad15e1d66fc06a53e3e97f778	Fixed in df072db65fdaa34ad15e1d66fc06a53e3e97f778
LinuxLinux	Affected ≥ ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < c66ab4b94bb04c162485759196555e08c0965320	Fixed in c66ab4b94bb04c162485759196555e08c0965320
LinuxLinux	Affected ≥ ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < a5f35d4b112af1415ff06bd501c8cc26cc08aa8b	Fixed in a5f35d4b112af1415ff06bd501c8cc26cc08aa8b
LinuxLinux	Affected ≥ ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 5a32409ed34a1868830899a5d2437f0b3bf3532c	Fixed in 5a32409ed34a1868830899a5d2437f0b3bf3532c
LinuxLinux	Affected ≥ ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 3b75831ceee76d32bb8e7ddd241904f92f9b5407	Fixed in 3b75831ceee76d32bb8e7ddd241904f92f9b5407
LinuxLinux	Affected =3.2	Fixed in–

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.

References

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