---
id: CVE-2022-49807
title: 'nvmet: fix a memory leak in nvmet_auth_set_key'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nvmet: fix a memory leak in nvmet_auth_set_key

  When changing dhchap secrets we need to release the old
  secrets as well.

  kmemleak complaint:
  --
  unreferenced object 0xf…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= db1312dd95488b5e6ff362ff66fcf953a46b1821 <
    65710ea51d4a185592c7b14c9e33d0c4a364f074
  - >-
    Linux >= db1312dd95488b5e6ff362ff66fcf953a46b1821 <
    0a52566279b4ee65ecd2503d7b7342851f84755c
  - Linux 6.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T19:49:04.070702Z'
published: '2025-05-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T19:49:50.365Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-49807'
references:
  - url: 'https://git.kernel.org/stable/c/65710ea51d4a185592c7b14c9e33d0c4a364f074'
  - url: 'https://git.kernel.org/stable/c/0a52566279b4ee65ecd2503d7b7342851f84755c'
tags:
  - cve.org
epss: 0.0017
epssPercentile: 0.06435
ingestedAt: '2026-11-05T22:38:31.600Z'
---

## Overview

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

nvmet: fix a memory leak in nvmet_auth_set_key

When changing dhchap secrets we need to release the old
secrets as well.

kmemleak complaint:
--
unreferenced object 0xffff8c7f44ed8180 (size 64):
  comm "check", pid 7304, jiffies 4295686133 (age 72034.246s)
  hex dump (first 32 bytes):
    44 48 48 43 2d 31 3a 30 30 3a 4c 64 4c 4f 64 71  DHHC-1:00:LdLOdq
    79 56 69 67 77 48 55 32 6d 5a 59 4c 7a 35 59 38  yVigwHU2mZYLz5Y8
  backtrace:
    [<00000000b6fc5071>] kstrdup+0x2e/0x60
    [<00000000f0f4633f>] 0xffffffffc0e07ee6
    [<0000000053006c05>] 0xffffffffc0dff783
    [<00000000419ae922>] configfs_write_iter+0xb1/0x120
    [<000000008183c424>] vfs_write+0x2be/0x3c0
    [<000000009005a2a5>] ksys_write+0x5f/0xe0
    [<00000000cd495c89>] do_syscall_64+0x38/0x90
    [<00000000f2a84ac5>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

## Affected

- `Linux >= db1312dd95488b5e6ff362ff66fcf953a46b1821 < 65710ea51d4a185592c7b14c9e33d0c4a364f074`
- `Linux >= db1312dd95488b5e6ff362ff66fcf953a46b1821 < 0a52566279b4ee65ecd2503d7b7342851f84755c`
- `Linux 6.0`

## Remediation

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