CVE-2021-20263

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-20263
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20263.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-20263
Downstream
Related
Published
2021-03-09T18:15:15Z
Modified
2025-08-09T20:01:27Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages