# CVE-2024-50111: LoongArch: Enable IRQ if do_ale() triggered in irq-enabled context

> A local attacker can trigger a kernel bug via unaligned access exceptions, causing a system crash or denial of service.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Nov 2024
- **Updated:** 11 May 2026
- **Also known as:** AZL-52486, AZL-52535, BELL-CVE-2024-50111, DEBIAN-CVE-2024-50111, GHSA-w824-fqw5-9rp4, ROOT-OS-DEBIAN-12-CVE-2024-50111, ROOT-OS-UBUNTU-2204-CVE-2024-50111, UBUNTU-CVE-2024-50111

## What is CVE-2024-50111?

CVE-2024-50111 is a medium-severity denial of service vulnerability in Linux kernel, published on 5 Nov 2024. 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:

LoongArch: Enable IRQ if do_ale() triggered in irq-enabled context

Unaligned access exception can be triggered in irq-enabled context such
as user mode, in this case do_ale() may call get_user() which may cause
sleep. Then we will get:

 BUG: sleeping function called from invalid context at arch/loongarch/kernel/access-helper.h:7
 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 129, name: modprobe
 preempt_count: 0, expected: 0
 RCU nest depth: 0, expected: 0
 CPU: 0 UID: 0 PID: 129 Comm: modprobe Tainted: G        W          6.12.0-rc1+ #1723
 Tainted: [W]=WARN
 Stack : 9000000105e0bd48 0000000000000000 9000000003803944 9000000105e08000
         9000000105e0bc70 9000000105e0bc78 0000000000000000 0000000000000000
         9000000105e0bc78 0000000000000001 9000000185e0ba07 9000000105e0b890
         ffffffffffffffff 9000000105e0bc78 73924b81763be05b 9000000100194500
         000000000000020c 000000000000000a 0000000000000000 0000000000000003
         00000000000023f0 00000000000e1401 00000000072f8000 0000007ffbb0e260
         0000000000000000 0000000000000000 9000000005437650 90000000055d5000
         0000000000000000 0000000000000003 0000007ffbb0e1f0 0000000000000000
         0000005567b00490 0000000000000000 9000000003803964 0000007ffbb0dfec
         00000000000000b0 0000000000000007 0000000000000003 0000000000071c1d
         ...
 Call Trace:
 [<9000000003803964>] show_stack+0x64/0x1a0
 [<9000000004c57464>] dump_stack_lvl+0x74/0xb0
 [<9000000003861ab4>] __might_resched+0x154/0x1a0
 [<900000000380c96c>] emulate_load_store_insn+0x6c/0xf60
 [<9000000004c58118>] do_ale+0x78/0x180
 [<9000000003801bc8>] handle_ale+0x128/0x1e0

So enable IRQ if unaligned access exception is triggered in irq-enabled
context to fix it.

## Which versions are affected by CVE-2024-50111?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-50111?

Apply the vendor's patch.

## Is CVE-2024-50111 being exploited?

There is no known exploitation of CVE-2024-50111 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-50111 and fix it if it is affected.

What it is: CVE-2024-50111 is a medium-severity denial of service vulnerability in Linux kernel, published on 5 Nov 2024. 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-2024-50111 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2024-50111/ (Markdown: https://insights.sbomify.com/CVE-2024-50111/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-50111
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-50111
- OSV: https://osv.dev/vulnerability/CVE-2024-50111

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-50111/
Summaries are generated and may contain mistakes; the official description above is the record.