VulnerabilityPublished 18 Oct 2026

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

Source GCVE Database

Authoritative record:CVE-2026-98705

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

Data as of 26 Oct 2026, 14:05 UTC

Severity

Medium

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.

ghsa-r63c-mg4x-3hrx

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–

AI-suggested

A fix has been implemented in the Linux kernel to properly account for proxy paths against the mesh path limit by sharing a 1024-entry budget and enforcing limits in mpp_path_add(). Users should apply the official Linux kernel updates that include this fix. Patch status is not explicitly confirmed in the provided data; check the vendor or kernel advisory for the specific fixed versions and update accordingly.

Description

A vulnerability in the Linux kernel's mac80211 WiFi subsystem allowed proxy-path churn to cause the interface path counter to become negative, bypassing the mesh path limit (MESH_MAX_MPATHS). This flaw could let mesh path additions exceed the intended maximum. The issue was due to improper accounting of proxy paths against the shared mesh path quota. The vulnerability has been resolved by ensuring proxy paths reserve quota slots and share a 1024-entry budget with mesh paths.

References

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