Source: qemu
X-Debbugs-CC: t...@security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for qemu.

CVE-2023-1386[0]:
| 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.

https://github.com/v9fs/linux/issues/29

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-1386
    https://www.cve.org/CVERecord?id=CVE-2023-1386

Please adjust the affected versions in the BTS as needed.

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