CVE-2018-16882
CVSS V2 High 7.2
CVSS V3 High 8.8
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.
Overview
- CVE ID
- CVE-2018-16882
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-01-03T16:29:00
- Last Modified Date
- 2023-01-19T16:04:54
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 4.14.91 | |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 4.15.0 | 4.19.13 |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 7.2
- Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://marc.info/?l=kvm&m=154514994222809&w=2 | Patch Third Party Advisory |
| https://lwn.net/Articles/775721/ | Third Party Advisory |
| https://lwn.net/Articles/775720/ | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16882 | Issue Tracking Patch Third Party Advisory |
| http://www.securityfocus.com/bid/106254 | Third Party Advisory VDB Entry |
| https://usn.ubuntu.com/3872-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3871-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3878-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3871-4/ | Third Party Advisory |
| https://usn.ubuntu.com/3871-3/ | Third Party Advisory |
| https://usn.ubuntu.com/3878-2/ | Third Party Advisory |
| https://usn.ubuntu.com/3871-5/ | Third Party Advisory |
| https://support.f5.com/csp/article/K80557033 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-16882 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16882 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:05:30 | Added to TrackCVE | |||
| 2022-12-03 15:58:56 | 2019-01-03T16:29Z | 2019-01-03T16:29:00 | CVE Published Date | updated |
| 2022-12-03 15:58:56 | 2019-10-09T23:36:26 | CVE Modified Date | updated | |
| 2022-12-03 15:58:56 | Undergoing Analysis | Vulnerability Status | updated | |
| 2023-01-19 16:08:36 | 2023-01-19T16:04:54 | CVE Modified Date | updated | |
| 2023-01-19 16:08:36 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |