Privilege Escalation

qemu is vulnerable to privilege escalation. The vulnerability exists through the virtio-fs shared file system daemon virtiofsd of QEMU where the new xattrmap option may cause the security.capability xattr in the guest to not drop on file write...

CVE-2021-20263: Improper Preservation of Permissions

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 ...