# CVE-2023-53712: ARM: 9317/1: kexec: Make smp stop calls asynchronous

> A local attacker can trigger a kernel panic via hrtimer interrupts, causing a denial of service on ARM Linux systems.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Oct 2025
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2023-53712, DEBIAN-CVE-2023-53712, GHSA-m7qp-wfxw-cjvm, ROOT-OS-DEBIAN-11-CVE-2023-53712, UBUNTU-CVE-2023-53712

## What is CVE-2023-53712?

CVE-2023-53712 is a denial of service vulnerability in Linux, published on 22 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

ARM: 9317/1: kexec: Make smp stop calls asynchronous

If a panic is triggered by a hrtimer interrupt all online cpus will be
notified and set offline. But as highlighted by commit 19dbdcb8039c
("smp: Warn on function calls from softirq context") this call should
not be made synchronous with disabled interrupts:

 softdog: Initiating panic
 Kernel panic - not syncing: Software Watchdog Timer expired
 WARNING: CPU: 1 PID: 0 at kernel/smp.c:753 smp_call_function_many_cond
   unwind_backtrace:
     show_stack
     dump_stack_lvl
     __warn
     warn_slowpath_fmt
     smp_call_function_many_cond
     smp_call_function
     crash_smp_send_stop.part.0
     machine_crash_shutdown
     __crash_kexec
     panic
     softdog_fire
     __hrtimer_run_queues
     hrtimer_interrupt

Make the smp call for machine_crash_nonpanic_core() asynchronous.

## Which versions are affected by CVE-2023-53712?


## How do I fix CVE-2023-53712?

Apply the vendor's patch.

## Is CVE-2023-53712 being exploited?

There is no known exploitation of CVE-2023-53712 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-53712 and fix it if it is affected.

What it is: CVE-2023-53712 is a denial of service vulnerability in Linux, published on 22 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-53712 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-53712/ (Markdown: https://insights.sbomify.com/CVE-2023-53712/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-53712
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-53712
- OSV: https://osv.dev/vulnerability/CVE-2023-53712

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-53712/
Summaries are generated and may contain mistakes; the official description above is the record.