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CVE-2026-98701

Linux: wifi: mac80211: release mesh path quota on failed additions

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in57bfaa8b2853425ab1b83114d823a62fe63f859fAlso 56691ed9ef792f180e008a43294a4dc059fbeca2, 7325a44474f20c1393a1c114c6811abce6ddfaf4CVE List
Published18 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

  • 57bfaa8b2853425ab1b83114d823a62fe63f859fLinuxCVE List
  • 56691ed9ef792f180e008a43294a4dc059fbeca2LinuxCVE List
  • 7325a44474f20c1393a1c114c6811abce6ddfaf4LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: release mesh path quota on failed additions

Repeated failed or duplicate mesh path additions can exhaust MESH_MAX_MPATHS while the path table holds fewer paths, which stops new paths to reachable destinations from being created.

mesh_path_add() reserves a slot before allocating and inserting a path. If allocation fails, the function returns without releasing the slot. If the rhashtable insertion reports an error or an existing destination, the function discards its candidate but retains the reservation. No new path is installed in any of these cases.

Release the reservation whenever the candidate is not installed.

Text from CVE List

Affected versions 12

  • Linuxaffected: ae76eef027f75fadd8a8eda55ee07707f077aacb before 57bfaa8b2853425ab1b83114d823a62fe63f859fCVE List
  • Linuxaffected: ae76eef027f75fadd8a8eda55ee07707f077aacb before 56691ed9ef792f180e008a43294a4dc059fbeca2CVE List
  • Linuxaffected: ae76eef027f75fadd8a8eda55ee07707f077aacb before a613c891906b558c10a4fa98ca29747b98e857cbCVE List
  • Linuxaffected: ae76eef027f75fadd8a8eda55ee07707f077aacb before a59eca4557c7462aad1b160011013290a92de97dCVE List
  • Linuxaffected: ae76eef027f75fadd8a8eda55ee07707f077aacb before 7325a44474f20c1393a1c114c6811abce6ddfaf4CVE List
  • Linuxaffected: 3.10CVE List
  • Linuxunaffected: all versions before 3.10CVE List
  • Linuxunaffected: 6.6.160 through 6.6.*CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5