Improper Preservation of Permissions Affecting qemu-kvm package, versions <5.2.0-17.1
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Test your applications- Snyk ID SNYK-SLES153-QEMUKVM-2676752
- published 14 Apr 2022
- disclosed 10 Jun 2021
Introduced: 10 Jun 2021
CVE-2021-20263 Open this link in a new tabHow to fix?
Upgrade SLES:15.3 qemu-kvm to version 5.2.0-17.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-kvm package and not the qemu-kvm package as distributed by SLES.
See How to fix? for SLES:15.3 relevant fixed versions and status.
A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest.