CVE-2023-1386

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://access.redhat.com/security/cve/CVE-2023-1386 ↗
• https://bugzilla.redhat.com/show_bug.cgi?id=2223985 ↗
• https://github.com/advisories/GHSA-ppj8-867g-rgjr ↗
• https://github.com/v9fs/linux/issues/29 ↗
• https://security.netapp.com/advisory/ntap-20230831-0005/ ↗