CVE-2023-2861
Moderate
Qemu: 9pfs: improper access control on special files
A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.
Exploit probability
0.4%
Published
December 6, 2023
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
238 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2023-2861
View original source
A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.
05 / REFERENCES
Further evidence
- https://access.redhat.com/security/cve/CVE-2023-2861
- https://bugzilla.redhat.com/show_bug.cgi?id=2219266
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2861.json
- https://gitlab.com/qemu-project/qemu
- https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
- https://nvd.nist.gov/vuln/detail/CVE-2023-2861
- https://security.netapp.com/advisory/ntap-20240125-0005/
- https://security.netapp.com/advisory/ntap-20240229-0002/