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.
[
{
"product": "QEMU",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "qemu 5.2.50"
}
]
}
]