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CVE-2026-98705

UnknownEPSS 0.20%

Last modified

CVE-2026-98705 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.20%

9.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 0e79c9d260862bd4676955d3cac7baa0d38a5b2e; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < bfd447ee32f727e535e317aa5a8447488f943803; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 7f83dab0045f756a82a15ac751165aefa03bed11; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < c66ab4b94bb04c162485759196555e08c0965320; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < df072db65fdaa34ad15e1d66fc06a53e3e97f778; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 3b75831ceee76d32bb8e7ddd241904f92f9b5407; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < 5a32409ed34a1868830899a5d2437f0b3bf3532c; >= ece1a2e7e86078c8379937b546e32cb7f25fcb6c, < a5f35d4b112af1415ff06bd501c8cc26cc08aa8b
LinuxLinux3.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98705?
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.
How severe is CVE-2026-98705?
Severity scoring for CVE-2026-98705 is pending analysis. The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98705?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST