CVE-2018-16882

Summary

CVE	CVE-2018-16882
State	PUBLIC
Assigner	[email protected]
Source Priority	CVE Program / NVD first with legacy fallback
Published	2019-01-03 16:29:00 UTC
Updated	2023-01-19 16:04:00 UTC
Description	A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable.

Risk And Classification

Problem Types: CWE-416

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Canonical	Ubuntu Linux	14.04	All	All	All
Operating System	Canonical	Ubuntu Linux	16.04	All	All	All
Operating System	Canonical	Ubuntu Linux	18.04	All	All	All
Operating System	Canonical	Ubuntu Linux	18.10	All	All	All
Operating System	Canonical	Ubuntu Linux	14.04	All	All	All
Operating System	Canonical	Ubuntu Linux	16.04	All	All	All
Operating System	Canonical	Ubuntu Linux	18.04	All	All	All
Operating System	Canonical	Ubuntu Linux	18.10	All	All	All
Operating System	Linux	Linux Kernel	All	All	All	All
Operating System	Linux	Linux Kernel	All	All	All	All

References

Reference	Source	Link	Tags
USN-3871-3: Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities \| Ubuntu security notices \| Ubuntu	UBUNTU	usn.ubuntu.com	Third Party Advisory
USN-3872-1: Linux kernel (HWE) vulnerabilities \| Ubuntu security notices \| Ubuntu	UBUNTU	usn.ubuntu.com	Third Party Advisory
Linux 4.19.13 [LWN.net]	CONFIRM	lwn.net	Third Party Advisory
USN-3871-5: Linux kernel (Azure) vulnerabilities \| Ubuntu security notices	UBUNTU	usn.ubuntu.com	Third Party Advisory
Linux 4.14.91 [LWN.net]	CONFIRM	lwn.net	Third Party Advisory
USN-3871-4: Linux kernel (HWE) vulnerabilities \| Ubuntu security notices	UBUNTU	usn.ubuntu.com	Third Party Advisory
1660604 – (CVE-2018-16882) CVE-2018-16882 Kernel: KVM: nVMX: use after free in posted interrupt processing	CONFIRM	bugzilla.redhat.com	Issue Tracking, Patch, Third Party Advisory
USN-3878-2: Linux kernel (Azure) vulnerabilities \| Ubuntu security notices	UBUNTU	usn.ubuntu.com	Third Party Advisory
Linux Kernel CVE-2018-16882 Local Denial of Service Vulnerability	BID	www.securityfocus.com	Third Party Advisory, VDB Entry
support.f5.com/csp/article/K80557033	CONFIRM	support.f5.com	Third Party Advisory
USN-3871-1: Linux kernel vulnerabilities \| Ubuntu security notices	UBUNTU	usn.ubuntu.com	Third Party Advisory
'[PATCH] KVM: Fix UAF in nested posted interrupt processing' - MARC	MISC	marc.info	Patch, Third Party Advisory
USN-3878-1: Linux kernel vulnerabilities \| Ubuntu security notices	UBUNTU	usn.ubuntu.com	Third Party Advisory
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Legacy QID Mappings

751451 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3935-1)