# CVE-2024-46843: scsi: ufs: core: Remove SCSI host only if added

> A kernel panic occurs when removing the UFS driver if SCSI host addition failed, causing a denial of service in Linux systems with MCQ enabled.

- **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:** 27 Sep 2024
- **Updated:** 11 May 2026
- **Also known as:** AZL-50147, BELL-CVE-2024-46843, DEBIAN-CVE-2024-46843, GHSA-gxvh-f4g9-p9wp, ROOT-OS-DEBIAN-12-CVE-2024-46843, ROOT-OS-UBUNTU-2204-CVE-2024-46843, UBUNTU-CVE-2024-46843

## What is CVE-2024-46843?

CVE-2024-46843 is a medium-severity vulnerability in Linux kernel, published on 27 Sep 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:

scsi: ufs: core: Remove SCSI host only if added

If host tries to remove ufshcd driver from a UFS device it would cause a
kernel panic if ufshcd_async_scan fails during ufshcd_probe_hba before
adding a SCSI host with scsi_add_host and MCQ is enabled since SCSI host
has been defered after MCQ configuration introduced by commit 0cab4023ec7b
("scsi: ufs: core: Defer adding host to SCSI if MCQ is supported").

To guarantee that SCSI host is removed only if it has been added, set the
scsi_host_added flag to true after adding a SCSI host and check whether it
is set or not before removing it.

## Which versions are affected by CVE-2024-46843?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-46843?

Apply the vendor's patch.

## Is CVE-2024-46843 being exploited?

There is no known exploitation of CVE-2024-46843 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-2024-46843 and fix it if it is affected.

What it is: CVE-2024-46843 is a medium-severity vulnerability in Linux kernel, published on 27 Sep 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-2024-46843 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-2024-46843/ (Markdown: https://insights.sbomify.com/CVE-2024-46843/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-46843
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-46843
- OSV: https://osv.dev/vulnerability/CVE-2024-46843

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-46843/
Summaries are generated and may contain mistakes; the official description above is the record.