# CVE-2019-15030: Information disclosure in n/a

> Local attackers can read vector registers of other processes on PowerPC Linux due to missing checks, leading to information disclosure.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L`)
- **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:** 13 Sep 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-15030, GHSA-hjqf-7xm5-j2g8, UBUNTU-CVE-2019-15030

## What is CVE-2019-15030?

CVE-2019-15030 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process because of a missing arch/powerpc/kernel/process.c check.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2019-15030?

It affects 4 products.


Products: Canonical Ubuntu Linux, Linux kernel, Opensuse Leap, Redhat Enterprise Linux.

## How do I fix CVE-2019-15030?

Apply the vendor's patch.

## Is CVE-2019-15030 being exploited?

There is no known exploitation of CVE-2019-15030 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-15030 and fix it if it is affected.

What it is: CVE-2019-15030 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Sep 2019. 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-2019-15030 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2019-15030/ (Markdown: https://insights.sbomify.com/CVE-2019-15030/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-15030
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-15030
- OSV: https://osv.dev/vulnerability/CVE-2019-15030

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-15030/
Summaries are generated and may contain mistakes; the official description above is the record.