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CVE-2018-16882
Detail
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.
Metrics
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OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.14.91
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.0 up to (excluding) 4.19.13
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14 up to (excluding) 4.14.91
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.13
Removed
CVSS V3
NIST AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Added
CVSS V3.1
NIST AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE Modified by Red Hat, Inc.10/09/2019 7:36:26 PM
Action
Type
Old Value
New Value
Added
CVSS V3
Red Hat, Inc. AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:H
Added
CWE
Red Hat, Inc. CWE-416
Modified Analysis by NIST4/23/2019 9:15:55 AM
Action
Type
Old Value
New Value
Changed
Reference Type
https://support.f5.com/csp/article/K80557033 No Types Assigned
https://support.f5.com/csp/article/K80557033 Third Party Advisory
OR
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
Changed
CVSS V2
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Changed
CVSS V3
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Changed
Reference Type
https://usn.ubuntu.com/3871-1/ No Types Assigned
https://usn.ubuntu.com/3871-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3871-3/ No Types Assigned
https://usn.ubuntu.com/3871-3/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3871-4/ No Types Assigned
https://usn.ubuntu.com/3871-4/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3871-5/ No Types Assigned
https://usn.ubuntu.com/3871-5/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3872-1/ No Types Assigned
https://usn.ubuntu.com/3872-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3878-1/ No Types Assigned
https://usn.ubuntu.com/3878-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3878-2/ No Types Assigned
https://usn.ubuntu.com/3878-2/ Third Party Advisory
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.14.91
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.0 up to (excluding) 4.19.13
Added
CVSS V2
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Added
CVSS V3
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CWE
CWE-416
Changed
Reference Type
http://www.securityfocus.com/bid/106254 No Types Assigned
http://www.securityfocus.com/bid/106254 Third Party Advisory, VDB Entry
Changed
Reference Type
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16882 No Types Assigned
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16882 Issue Tracking, Patch, Third Party Advisory
Changed
Reference Type
https://lwn.net/Articles/775720/ No Types Assigned
https://lwn.net/Articles/775720/ Third Party Advisory
Changed
Reference Type
https://lwn.net/Articles/775721/ No Types Assigned
https://lwn.net/Articles/775721/ Third Party Advisory
Changed
Reference Type
https://marc.info/?l=kvm&m=154514994222809&w=2 No Types Assigned
https://marc.info/?l=kvm&m=154514994222809&w=2 Patch, Third Party Advisory
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