# CVE-2022-42895: Info Leak in l2cap_core in the Linux Kernel

> Remote attackers can leak kernel pointers via Bluetooth L2CAP, requiring kernel patching to prevent information disclosure.

- **Severity:** Medium 5.1 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 23 Nov 2022
- **Updated:** 14 Oct 2026
- **Also known as:** DEBIAN-CVE-2022-42895, GHSA-48h7-cvhw-3w6x, UBUNTU-CVE-2022-42895

## What is CVE-2022-42895?

CVE-2022-42895 is a medium-severity vulnerability in Linux kernel, published on 23 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely.
We recommend upgrading past commit  https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://www.google.com/url

Weakness: CWE-824 (Access of Uninitialized Pointer)

## Which versions are affected by CVE-2022-42895?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2022-42895?

Apply the vendor's patch.

## Is CVE-2022-42895 being exploited?

There is no known exploitation of CVE-2022-42895 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-2022-42895 and fix it if it is affected.

What it is: CVE-2022-42895 is a medium-severity vulnerability in Linux kernel, published on 23 Nov 2022. 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-2022-42895 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-2022-42895/ (Markdown: https://insights.sbomify.com/CVE-2022-42895/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-42895
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-42895
- OSV: https://osv.dev/vulnerability/CVE-2022-42895

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-42895/
Summaries are generated and may contain mistakes; the official description above is the record.