---
id: CVE-2022-21166
title: >-
  Incomplete cleanup in specific special register write operations for some
  Intel(R) Processors may allow an authenticated user to potentially enable
  information disclosure via local access.
summary: >-
  Incomplete cleanup in specific special register write operations for some
  Intel(R) Processors may allow an authenticated user to potentially enable
  information disclosure via local access.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-459
  - CWE-459
vendor: intel
product: sgx_dcap
affected:
  - xen
  - fedora = 35
  - fedora = 36
  - sgx_dcap < 1.14.100.3
  - sgx_psw < 2.16.100.3
  - sgx_psw < 2.17.100.3
  - sgx_sdk < 2.16.100.3
  - sgx_sdk < 2.17.100.3
  - esxi = 7.0
  - debian_linux = 9.0
  - debian_linux = 10.0
  - debian_linux = 11.0
patched:
  - sgx_dcap 1.14.100.3
  - sgx_psw 2.17.100.3
  - sgx_sdk 2.17.100.3
published: '2022-06-15'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T16:17:24.740'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-21166'
references:
  - url: 'http://www.openwall.com/lists/oss-security/2022/06/16/1'
    label: secure@intel.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html'
    label: secure@intel.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHTEW3RXU2GW6S3RCPQG4VNCZGI3TOSV/
    label: secure@intel.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCVOMHBQRH4KP7IN6U24CW7F2D2L5KBS/
    label: secure@intel.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
    label: secure@intel.com
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4P2KJYL74KGLHE4JZETVW7PZH6ZIABA/
    label: secure@intel.com
  - url: 'https://security.gentoo.org/glsa/202208-23'
    label: secure@intel.com
  - url: 'https://security.netapp.com/advisory/ntap-20220624-0008/'
    label: secure@intel.com
  - url: 'https://www.debian.org/security/2022/dsa-5173'
    label: secure@intel.com
  - url: 'https://www.debian.org/security/2022/dsa-5178'
    label: secure@intel.com
  - url: 'https://www.debian.org/security/2022/dsa-5184'
    label: secure@intel.com
  - url: >-
      https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html
    label: secure@intel.com
  - url: 'http://www.openwall.com/lists/oss-security/2022/06/16/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHTEW3RXU2GW6S3RCPQG4VNCZGI3TOSV/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCVOMHBQRH4KP7IN6U24CW7F2D2L5KBS/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4P2KJYL74KGLHE4JZETVW7PZH6ZIABA/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202208-23'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20220624-0008/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5173'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5178'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5184'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.05778
epssPercentile: 0.92936
ingestedAt: '2026-10-14T16:40:32.048Z'
---

## Overview

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

## Affected

- `xen`
- `fedora = 35`
- `fedora = 36`
- `sgx_dcap < 1.14.100.3`
- `sgx_psw < 2.16.100.3`
- `sgx_psw < 2.17.100.3`
- `sgx_sdk < 2.16.100.3`
- `sgx_sdk < 2.17.100.3`
- `esxi = 7.0`
- `debian_linux = 9.0`
- `debian_linux = 10.0`
- `debian_linux = 11.0`

## Remediation

Upgrade past the affected range:

- `sgx_dcap 1.14.100.3`
- `sgx_psw 2.17.100.3`
- `sgx_sdk 2.17.100.3`