Missing Release of Resource after Effective Lifetime in QEMU - CVE-2017-7377
Published: June 6, 2017 / Updated: December 9, 2025
Vulnerability identifier: #VU6935
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H]
CVE-ID: CVE-2017-7377
CWE-ID: CWE-772
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious guest to perform a denial of service attack.
The vulnerability exists due to an error within the v9fs_create() and v9fs_lcreate functions in hw/9pfs/9p.c in QEMU. A privileged user on the guest OS can consume all available file descriptors and perform a denial of service attack against the hypervisor.
Affected software
QEMU
How to mitigate CVE-2017-7377
Install update from vendor's website.
QEMU - update to 2.9.0