---
id: CVE-2026-31634
title: |-
  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.
summary: |-
  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.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.22.1, < 5.15.203'
  - 'linux_kernel >= 5.16, < 6.1.169'
  - 'linux_kernel >= 6.2, < 6.6.135'
  - 'linux_kernel >= 6.7, < 6.12.82'
  - 'linux_kernel >= 6.13, < 6.18.23'
  - 'linux_kernel >= 6.19, < 6.19.13'
  - linux_kernel = 2.6.22
  - linux_kernel = 7.0
patched:
  - linux_kernel 6.19.13
published: '2026-04-24'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:14.267'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-31634'
references:
  - url: 'https://git.kernel.org/stable/c/12de9e0e0b0b7058be7dfb8a5927eb565bc25780'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/139c750bf06649097d98b0bc41e2a678b4627e27'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/45d9584e51bdd61faf1900f82666d4ea6a85da72'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9ce36d28f67c2a477a7e2f03480de3f6783fb363'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f125846ee79fcae537a964ce66494e96fa54a6de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc76d0bd00850b7372f0a4a319c0c60f80487632'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-082556.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00129
epssPercentile: 0.02501
ingestedAt: '2026-09-08T15:33:26.990Z'
---

## Overview

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.

## Affected

- `linux_kernel >= 2.6.22.1, < 5.15.203`
- `linux_kernel >= 5.16, < 6.1.169`
- `linux_kernel >= 6.2, < 6.6.135`
- `linux_kernel >= 6.7, < 6.12.82`
- `linux_kernel >= 6.13, < 6.18.23`
- `linux_kernel >= 6.19, < 6.19.13`
- `linux_kernel = 2.6.22`
- `linux_kernel = 7.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.13`