Detections
Analytics
CVE-2021-20263
low
Description
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.
References
https://www.openwall.com/lists/oss-security/2021/03/08/1
https://security.netapp.com/advisory/ntap-20210507-0002/