vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-22543): Linux kernel vulnerabilities

Try Surface Command
Back to search
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
2021-05-26
Added
2021-09-09
Modified
2023-03-22

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.

Solution(s)

ubuntu-upgrade-linux-image-4-15-0-1028-dell300xubuntu-upgrade-linux-image-4-15-0-1081-oracleubuntu-upgrade-linux-image-4-15-0-1096-raspi2ubuntu-upgrade-linux-image-4-15-0-1100-kvmubuntu-upgrade-linux-image-4-15-0-1109-gcpubuntu-upgrade-linux-image-4-15-0-1112-awsubuntu-upgrade-linux-image-4-15-0-1113-snapdragonubuntu-upgrade-linux-image-4-15-0-1124-azureubuntu-upgrade-linux-image-4-15-0-159-genericubuntu-upgrade-linux-image-4-15-0-159-generic-lpaeubuntu-upgrade-linux-image-4-15-0-159-lowlatencyubuntu-upgrade-linux-image-5-10-0-1049-oemubuntu-upgrade-linux-image-5-11-0-1015-azureubuntu-upgrade-linux-image-5-11-0-1015-kvmubuntu-upgrade-linux-image-5-11-0-1017-awsubuntu-upgrade-linux-image-5-11-0-1017-oracleubuntu-upgrade-linux-image-5-11-0-1017-raspiubuntu-upgrade-linux-image-5-11-0-1017-raspi-nolpaeubuntu-upgrade-linux-image-5-11-0-1018-gcpubuntu-upgrade-linux-image-5-11-0-34-genericubuntu-upgrade-linux-image-5-11-0-34-generic-64kubuntu-upgrade-linux-image-5-11-0-34-generic-lpaeubuntu-upgrade-linux-image-5-11-0-34-lowlatencyubuntu-upgrade-linux-image-5-4-0-1023-gkeopubuntu-upgrade-linux-image-5-4-0-1043-raspiubuntu-upgrade-linux-image-5-4-0-1046-kvmubuntu-upgrade-linux-image-5-4-0-1052-gcpubuntu-upgrade-linux-image-5-4-0-1052-gkeubuntu-upgrade-linux-image-5-4-0-1054-oracleubuntu-upgrade-linux-image-5-4-0-1056-awsubuntu-upgrade-linux-image-5-4-0-1058-azureubuntu-upgrade-linux-image-5-4-0-84-genericubuntu-upgrade-linux-image-5-4-0-84-generic-lpaeubuntu-upgrade-linux-image-5-4-0-84-lowlatencyubuntu-upgrade-linux-image-5-8-0-1043-azureubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-dell300xubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-18-04ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-4ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-4ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04bubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragonubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04

References

Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.

Try it today