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CVE-2021-20263

Published: Mar 9, 2021

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	QEMU	affected `qemu 5.2.50`

Weaknesses (CWE)

References

https://bugzilla.redhat.com/show_bug.cgi?id=1933668

x_refsource_MISC

https://www.openwall.com/lists/oss-security/2021/03/08/1

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20210507-0002/

x_refsource_CONFIRM

vendor-advisory

x_refsource_GENTOO

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