CVE-2021-20263
Fixed in a distro release EPSS <1%
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.
Products: qemu
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | qemu | 1:5.2+dfsg-9 |
| Debian 13 | qemu | 1:5.2+dfsg-9 |
| Debian 14 | qemu | 1:5.2+dfsg-9 |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | qemu | 5.2.0-17.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | qemu | 5.2.0-17.1 |
| openSUSE Leap 15.3 | qemu | 5.2.0-17.1 |
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 |