VulnerabilityModified
CVE-2016-1922
QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw.
MEDIUM 5.5EPSS 0.43%
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- qemu/qemu · debian/debian linux
- Source
- secalert@redhat.com
References
- http://www.debian.org/security/2016/dsa-3469Third Party Advisory
- http://www.debian.org/security/2016/dsa-3470Third Party Advisory
- http://www.debian.org/security/2016/dsa-3471Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/81058Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1283934Issue Tracking, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201604-01Third Party Advisory
- http://www.debian.org/security/2016/dsa-3469Third Party Advisory
- http://www.debian.org/security/2016/dsa-3470Third Party Advisory
- http://www.debian.org/security/2016/dsa-3471Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/16/6Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/81058Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1283934Issue Tracking, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201604-01Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.