# CVE-2024-38662: bpf: Allow delete from sockmap/sockhash only if update is allowed

> A missing authorization check in the Linux kernel BPF subsystem allows unauthorized deletion from sockmap/sockhash, potentially leading to privilege escalation or denial of service.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **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:** 21 Jun 2024
- **Updated:** 15 Oct 2026
- **Also known as:** AZL-42842, AZL-42847, BELL-CVE-2024-38662, DEBIAN-CVE-2024-38662, GHSA-pj9w-f8jv-85cc, UBUNTU-CVE-2024-38662

## What is CVE-2024-38662?

CVE-2024-38662 is a medium-severity missing authorization vulnerability in Linux kernel, published on 21 Jun 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:

bpf: Allow delete from sockmap/sockhash only if update is allowed

We have seen an influx of syzkaller reports where a BPF program attached to
a tracepoint triggers a locking rule violation by performing a map_delete
on a sockmap/sockhash.

We don't intend to support this artificial use scenario. Extend the
existing verifier allowed-program-type check for updating sockmap/sockhash
to also cover deleting from a map.

From now on only BPF programs which were previously allowed to update
sockmap/sockhash can delete from these map types.

## Which versions are affected by CVE-2024-38662?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-38662?

Apply the vendor's patch.

## Is CVE-2024-38662 being exploited?

There is no known exploitation of CVE-2024-38662 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-2024-38662 and fix it if it is affected.

What it is: CVE-2024-38662 is a medium-severity missing authorization vulnerability in Linux kernel, published on 21 Jun 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-2024-38662 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-2024-38662/ (Markdown: https://insights.sbomify.com/CVE-2024-38662/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-38662
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-38662
- OSV: https://osv.dev/vulnerability/CVE-2024-38662

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-38662/
Summaries are generated and may contain mistakes; the official description above is the record.