CVE - CVE-2021-22543

CVE-ID
CVE-2021-22543	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:FEDORA-2021-95f2f1cfc7 URL:https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ROQIXQB7ZAWI3KSGSHR6H5RDUWZI775S/ MISC:FEDORA-2021-fe826f202e URL:https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4G5YBUVEPHZYXMKNGBZ3S6INFCTEEL4E/ MISC:[debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update URL:https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html MISC:[debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update URL:https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html MISC:[oss-security] 20210626 Re: CVE-2021-22543 - /dev/kvm LPE URL:http://www.openwall.com/lists/oss-security/2021/06/26/1 MISC:https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584 URL:https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584 MISC:https://security.netapp.com/advisory/ntap-20210708-0002/ URL:https://security.netapp.com/advisory/ntap-20210708-0002/
Assigning CNA
Google LLC
Date Record Created
20210105	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210105)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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