# CVE-2025-5745: Memory corruption in glibc

> A glibc bug on Power10 corrupts non-volatile registers, potentially allowing control flow hijacking or data leakage.

- **Severity:** Medium 5.6 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Jun 2025
- **Updated:** 5 Jun 2025
- **Also known as:** DEBIAN-CVE-2025-5745, GHSA-7qrf-49g7-25m2, MINI-pr9c-2v5q-34m2

## What is CVE-2025-5745?

CVE-2025-5745 is a medium-severity memory corruption vulnerability in Gnu Glibc, published on 5 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The strncmp implementation optimized for the Power10 processor in the GNU C Library version 2.40 and later writes to vector registers v20 to v31 without saving contents from the caller (those registers are defined as non-volatile registers by the powerpc64le ABI), resulting in overwriting of its contents and potentially altering control flow of the caller, or leaking the input strings to the function to other parts of the program.

Weakness: CWE-665 (Improper Initialization)

## Which versions are affected by CVE-2025-5745?

It affects 1 product.


Products: Gnu Glibc.

## How do I fix CVE-2025-5745?

Apply the vendor's patch.

## Is CVE-2025-5745 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5745 exists.

## Other vulnerabilities in Gnu Glibc

- [CVE-2026-5450](https://insights.sbomify.com/CVE-2026-5450/): scanf %mc off-by-one heap buffer overflow (critical 9.8)
- [CVE-2023-25139](https://insights.sbomify.com/CVE-2023-25139/): Memory corruption in n/a (critical 9.8)
- [CVE-1999-0199](https://insights.sbomify.com/CVE-1999-0199/): Other in n/a (critical 9.8)
- [CVE-2019-1010022](https://insights.sbomify.com/CVE-2019-1010022/): Security feature bypass in glibc (critical 9.8)
- [CVE-2005-3590](https://insights.sbomify.com/CVE-2005-3590/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-5745 and fix it if it is affected.

What it is: CVE-2025-5745 is a medium-severity memory corruption vulnerability in Gnu Glibc, published on 5 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5745 exists.

Affected product: Gnu Glibc. 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-2025-5745/ (Markdown: https://insights.sbomify.com/CVE-2025-5745/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-5745
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-5745
- OSV: https://osv.dev/vulnerability/CVE-2025-5745

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-5745/
Summaries are generated and may contain mistakes; the official description above is the record.