---
id: CVE-2022-49811
title: 'drbd: use after free in drbd_create_device()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drbd: use after free in drbd_create_device()

  The drbd_destroy_connection() frees the "connection" so use the _safe()
  iterator to prevent a use after free.
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    fc1897f16ebcfd22364f2afcc27f53a740f3bc7a
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    9ed51414aef6e59e832e2960f10766dce2d5b1a1
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    7d93417d596402ddd46bd76c721f205d09d0d025
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    c2a00b149836d60c222930bbea6b2139caf34d4f
  - >-
    Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 <
    a7a1598189228b5007369a9622ccdf587be0730f
  - Linux 3.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T19:49:12.335055Z'
published: '2025-05-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T19:49:50.698Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-49811'
references:
  - url: 'https://git.kernel.org/stable/c/fc1897f16ebcfd22364f2afcc27f53a740f3bc7a'
  - url: 'https://git.kernel.org/stable/c/bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1'
  - url: 'https://git.kernel.org/stable/c/813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5'
  - url: 'https://git.kernel.org/stable/c/9ed51414aef6e59e832e2960f10766dce2d5b1a1'
  - url: 'https://git.kernel.org/stable/c/7d93417d596402ddd46bd76c721f205d09d0d025'
  - url: 'https://git.kernel.org/stable/c/c2a00b149836d60c222930bbea6b2139caf34d4f'
  - url: 'https://git.kernel.org/stable/c/a7a1598189228b5007369a9622ccdf587be0730f'
tags:
  - cve.org
epss: 0.00228
epssPercentile: 0.13612
ingestedAt: '2026-11-05T22:38:31.603Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drbd: use after free in drbd_create_device()

The drbd_destroy_connection() frees the "connection" so use the _safe()
iterator to prevent a use after free.

## Affected

- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < fc1897f16ebcfd22364f2afcc27f53a740f3bc7a`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < 813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < 9ed51414aef6e59e832e2960f10766dce2d5b1a1`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < 7d93417d596402ddd46bd76c721f205d09d0d025`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < c2a00b149836d60c222930bbea6b2139caf34d4f`
- `Linux >= b6f85ef9538b2111a8ba0bbfae9aaebabfc94961 < a7a1598189228b5007369a9622ccdf587be0730f`
- `Linux 3.15`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.