# CVE-2024-57791: net/smc: check return value of sock_recvmsg when draining clc data

> A remote attacker can cause a denial of service in the Linux kernel SMC module by sending crafted messages that trigger an infinite loop during data draining.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 11 Jan 2025
- **Updated:** 15 Oct 2026
- **Also known as:** BELL-CVE-2024-57791, DEBIAN-CVE-2024-57791, GHSA-g3r9-3xjg-2vvw, UBUNTU-CVE-2024-57791

## What is CVE-2024-57791?

CVE-2024-57791 is a high-severity denial of service vulnerability in Linux kernel, published on 11 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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

net/smc: check return value of sock_recvmsg when draining clc data

When receiving clc msg, the field length in smc_clc_msg_hdr indicates the
length of msg should be received from network and the value should not be
fully trusted as it is from the network. Once the value of length exceeds
the value of buflen in function smc_clc_wait_msg it may run into deadloop
when trying to drain the remaining data exceeding buflen.

This patch checks the return value of sock_recvmsg when draining data in
case of deadloop in draining.

## Which versions are affected by CVE-2024-57791?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-57791?

Apply the vendor's patch.

## Is CVE-2024-57791 being exploited?

There is no known exploitation of CVE-2024-57791 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-2024-57791 and fix it if it is affected.

What it is: CVE-2024-57791 is a high-severity denial of service vulnerability in Linux kernel, published on 11 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-57791 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-2024-57791/ (Markdown: https://insights.sbomify.com/CVE-2024-57791/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-57791
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-57791
- OSV: https://osv.dev/vulnerability/CVE-2024-57791

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-57791/
Summaries are generated and may contain mistakes; the official description above is the record.