CVE-2021-22543

CVSS V2 Medium 4.6 CVSS V3 High 7.8
Description
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Overview
  • CVE ID
  • CVE-2021-22543
  • Assigner
  • cve-coordination@google.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-26T11:15:08
  • Last Modified Date
  • 2022-04-01T18:45:24
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:linux:linux_kernel:2021-05-18:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h410c_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h410c:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h300s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h300s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h500s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h500s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h700s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h700s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h300e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h300e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h500e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h500e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h700e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h700e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:baseboard_management_controller_h410s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:baseboard_management_controller_h410s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584 Exploit Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/06/26/1 Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROQIXQB7ZAWI3KSGSHR6H5RDUWZI775S/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4G5YBUVEPHZYXMKNGBZ3S6INFCTEEL4E/ Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210708-0002/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-22543
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22543
History
Created Old Value New Value Data Type Notes
2022-04-04 00:38:58 Added to TrackCVE
2022-12-05 02:59:37 security@google.com cve-coordination@google.com CVE Assigner updated
2022-12-05 02:59:38 2021-05-26T11:15Z 2021-05-26T11:15:08 CVE Published Date updated
2022-12-05 02:59:38 2022-04-01T18:45:24 CVE Modified Date updated
2022-12-05 02:59:38 Analyzed Vulnerability Status updated