CVE-2023-1386 Information

Description

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID none of these privileged bits are correctly dropped. As a result in rare circumstances this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.

Reference

https://access.redhat.com/security/cve/CVE-2023-1386 https://bugzilla.redhat.com/show_bug.cgi?id=2223985