CVEvulnerability
CVE-2016-1922
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2016-12-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-476
Description
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.
Affected configurations
• qemu qemu (<= 2.5.1.1)
• debian debian linux 7.0
• debian debian linux 8.0
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- http://www.debian.org/security/2016/dsa-3469 Third Party Advisory
- http://www.debian.org/security/2016/dsa-3470 Third Party Advisory
- http://www.debian.org/security/2016/dsa-3471 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/1 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/6 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/81058 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1283934 Issue Tracking, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201604-01 Third Party Advisory
- http://www.debian.org/security/2016/dsa-3469 Third Party Advisory
- http://www.debian.org/security/2016/dsa-3470 Third Party Advisory
- http://www.debian.org/security/2016/dsa-3471 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/1 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/6 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/81058 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1283934 Issue Tracking, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201604-01 Third Party Advisory