SB2016121002 - Memory leak in QEMU
Published: December 10, 2016 Updated: July 28, 2020
Security Bulletin ID
SB2016121002
Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2016-9102)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the v9fs_xattrcreate function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) via a large number of Txattrcreate messages with the same fid number. A remote attacker can perform a denial of service attack.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.
References
- http://git.qemu.org/?p=qemu.git;a=commit;h=ff55e94d23ae94c8628b0115320157c763eb3e06
- http://www.openwall.com/lists/oss-security/2016/10/27/15
- http://www.openwall.com/lists/oss-security/2016/10/30/6
- http://www.securityfocus.com/bid/93962
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg01861.html
- https://security.gentoo.org/glsa/201611-11