CVE-2022-0358
Description
A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.
How to fix
- qemu qemu6.2.0-7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | v < 6.2.0-7 | 6.2.0-7 |
| redhat enterprise_linux | 8.0 | — |
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