vulnerability
Red Hat: CVE-2021-20263: QEMU: virtiofsd: 'security.capabilities' is not dropped with xattrmap option
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:N/I:P/A:N) | Mar 9, 2021 | Jul 9, 2025 | Jul 9, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
Mar 9, 2021
Added
Jul 9, 2025
Modified
Jul 9, 2025
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.
Solution
no-fix-redhat-rpm-package
References
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