# CVE-2025-4432: Ring: some aes functions may panic when overflow checking is enabled in ring

CVE-2025-4432 is fixed in rust-ring on 1 platform, first by DEBIAN-CVE-2025-4432, released May 9, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-4432
- Priority: Routine
- CVSS: 5.3 (Moderate)
- EPSS: 0.0103
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 9, 2025
- Weakness: Allocation of Resources Without Limits or Throttling
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-4432

## Description

A flaw was found in Rust's Ring package. A panic may be triggered when overflow checking is enabled. In the QUIC protocol, this flaw allows an attacker to induce this panic by sending a specially crafted packet. It will likely occur unintentionally in 1 out of every 2**32 packets sent or received.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | rust-ring Debian 13.5 (trixie) | 0.17.14-1 | [DEBIAN-CVE-2025-4432](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4432.md) | May 9, 2025 |
| Linux | rust-ring Debian 14 | 0.17.14-1 | [DEBIAN-CVE-2025-4432](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4432.md) | May 9, 2025 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.