NULL pointer dereference in QEMU - CVE-2016-7422
Published: December 10, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU39980
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-7422
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a large I/O descriptor buffer length value.
How to mitigate CVE-2016-7422
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://git.qemu.org/?p=qemu.git;a=commit;h=973e7170dddefb491a48df5cba33b2ae151013a0
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- http://www.openwall.com/lists/oss-security/2016/09/16/10
- http://www.openwall.com/lists/oss-security/2016/09/16/4
- http://www.securityfocus.com/bid/92996
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.html
- https://security.gentoo.org/glsa/201609-01