# CVE-2022-49145: ACPI: CPPC: Avoid out of bounds access when parsing _CPC data

> A local attacker can cause a denial of service by triggering an out-of-bounds read in the Linux kernel's ACPI CPPC driver when parsing malformed _CPC data.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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:** 26 Feb 2025
- **Updated:** 11 May 2026
- **Also known as:** DEBIAN-CVE-2022-49145, GHSA-j4x2-v364-5ppc, UBUNTU-CVE-2022-49145

## What is CVE-2022-49145?

CVE-2022-49145 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. 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:

ACPI: CPPC: Avoid out of bounds access when parsing _CPC data

If the NumEntries field in the _CPC return package is less than 2, do
not attempt to access the "Revision" element of that package, because
it may not be present then.

BugLink: https://lore.kernel.org/lkml/20220322143534.GC32582@xsang-OptiPlex-9020/

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2022-49145?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2022-49145?

Apply the vendor's patch.

## Is CVE-2022-49145 being exploited?

There is no known exploitation of CVE-2022-49145 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-2022-49145 and fix it if it is affected.

What it is: CVE-2022-49145 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 2025. 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-2022-49145 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-2022-49145/ (Markdown: https://insights.sbomify.com/CVE-2022-49145/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-49145
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-49145
- OSV: https://osv.dev/vulnerability/CVE-2022-49145

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-49145/
Summaries are generated and may contain mistakes; the official description above is the record.