CVE-2021-22543

Published on: 05/26/2021 12:00:00 AM UTC

Last Modified on: 11/12/2021 08:08:00 PM UTC

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L

Certain versions of Debian Linux from Debian contain the following vulnerability:

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.

  • CVE-2021-22543 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 4.6 - MEDIUM

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
CVE-2021-22543 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
text/html
URL Logo CONFIRM security.netapp.com/advisory/ntap-20210708-0002/
Linux: KVM VM_IO|VM_PFNMAP vma mishandling · Advisory · google/security-research · GitHub github.com
text/html
URL Logo MISC github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584
[SECURITY] Fedora 33 Update: kernel-5.12.14-200.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-95f2f1cfc7
oss-security - Re: CVE-2021-22543 - /dev/kvm LPE www.openwall.com
text/html
URL Logo MLIST [oss-security] 20210626 Re: CVE-2021-22543 - /dev/kvm LPE
oss-security - CVE-2021-22543 - /dev/kvm LPE www.openwall.com
text/html
URL Logo MLIST [oss-security] 20210526 CVE-2021-22543 - /dev/kvm LPE
[SECURITY] [DLA 2785-1] linux-4.19 security update lists.debian.org
text/html
URL Logo MLIST [debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update
[SECURITY] Fedora 34 Update: kernel-5.12.14-300.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-fe826f202e
oss-security - Re: CVE-2021-22543 - /dev/kvm LPE www.openwall.com
text/html
URL Logo MLIST [oss-security] 20210526 Re: CVE-2021-22543 - /dev/kvm LPE
oss-security - Re: CVE-2021-22543 - /dev/kvm LPE www.openwall.com
text/html
URL Logo MLIST [oss-security] 20210526 Re: CVE-2021-22543 - /dev/kvm LPE

Related QID Numbers

  • 159329 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-3057)
  • 159393 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9450)
  • 159394 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9451)
  • 159399 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9452)
  • 159400 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9453)
  • 159415 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-3801)
  • 178844 Debian Security Update for linux-4.19 (DLA 2785-1)
  • 198487 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5071-1)
  • 198491 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5070-1)
  • 198502 Ubuntu Security Notification for Linux kernel (HWE) Vulnerabilities (USN-5071-2)
  • 198512 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5071-3)
  • 198518 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5094-2)
  • 198520 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5094-1)
  • 198533 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5106-1)
  • 198548 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-5120-1)
  • 239541 Red Hat Update for kernel (RHSA-2021:3057)
  • 239542 Red Hat Update for kpatch-patch (RHSA-2021:3044)
  • 239543 Red Hat Update for kernel-rt (RHSA-2021:3088)
  • 239566 Red Hat Update for kpatch-patch (RHSA-2021:3181)
  • 239570 Red Hat Update for kernel (RHSA-2021:3173)
  • 239593 Red Hat Update for kpatch-patch (RHSA-2021:3380)
  • 239594 Red Hat Update for kernel-rt (RHSA-2021:3375)
  • 239599 Red Hat Update for kernel (RHSA-2021:3363)
  • 239663 Red Hat Update for kpatch-patch (RHSA-2021:3768)
  • 239675 Red Hat Update for kernel-rt (RHSA-2021:3802)
  • 239676 Red Hat Update for kernel (RHSA-2021:3801)
  • 257119 CentOS Security Update for kernel (CESA-2021:3801)
  • 281692 Fedora Security Update for kernel (FEDORA-2021-fe826f202e)
  • 281693 Fedora Security Update for kernel (FEDORA-2021-95f2f1cfc7)
  • 352799 Amazon Linux Security Advisory for kernel: ALAS2-2021-1699
  • 352871 Amazon Linux Security Advisory for kernel : ALAS-2021-1539
  • 750946 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:2647-1)
  • 750947 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:2644-1)
  • 750949 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1142-1)
  • 750953 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:2645-1)
  • 750963 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:2687-1)
  • 751437 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3876-1)
  • 751441 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3876-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux9.0AllAllAll
Operating
System
FedoraprojectFedora33AllAllAll
Operating
System
FedoraprojectFedora34AllAllAll
Operating
System
LinuxLinux Kernel2021-05-18AllAllAll
ApplicationNetappHci Baseboard Management Controller-AllAllAll
ApplicationNetappSolidfire Baseboard Management Controller-AllAllAll
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:o:linux:linux_kernel:2021-05-18:*:*:*:*:*:*:*:
  • cpe:2.3:a:netapp:hci_baseboard_management_controller:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*:

Discovery Credit

David Stevens

Kevin Hamacher

Jann Horn

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-22543 : An issue was discovered in the #Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KV… twitter.com/i/web/status/1… 2021-05-26 10:35:22
Reddit Logo Icon /r/netcve CVE-2021-22543 2021-05-26 10:41:45
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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