CVE-2017-12168
"Linux KVM Performance Monitors Cycle Count Register Denial of Service"
Description
The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR).
INFO
Published Date :
Sept. 20, 2017, 8:29 a.m.
Last Modified :
April 20, 2025, 1:37 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel packages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-12168.
| URL | Resource |
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 | Issue Tracking Patch Third Party Advisory |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 | Release Notes Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1492984 | Issue Tracking Patch Third Party Advisory |
| https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 | Issue Tracking Patch Third Party Advisory |
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 | Issue Tracking Patch Third Party Advisory |
| http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 | Release Notes Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1492984 | Issue Tracking Patch Third Party Advisory |
| https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 | Issue Tracking Patch Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-12168 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-12168
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-12168 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-12168 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 Added Reference http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1492984 Added Reference https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Jan. 25, 2024
Action Type Old Value New Value Removed CVSS V3 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description An assertion failure issue was found in the Linux kernel's KVM hypervisor module built to support visualization on ARM64 architecture platforms. The failure could occur while accessing Performance Monitors Cycle Count Register (PMCCNTR) from a guest. A privileged guest user could use this flaw to crash the host kernel resulting in denial of service. The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR). Removed CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:C) Removed CVSS V3 Red Hat, Inc. AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Removed Reference https://access.redhat.com/errata/RHEA-2017:3163 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2017-12168 [No Types Assigned] Added CWE Red Hat, Inc. CWE-617 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR). An assertion failure issue was found in the Linux kernel's KVM hypervisor module built to support visualization on ARM64 architecture platforms. The failure could occur while accessing Performance Monitors Cycle Count Register (PMCCNTR) from a guest. A privileged guest user could use this flaw to crash the host kernel resulting in denial of service. Added CVSS V2 Red Hat, Inc. (AV:A/AC:M/Au:S/C:N/I:N/A:C) Added CVSS V3 Red Hat, Inc. AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Added Reference https://access.redhat.com/security/cve/CVE-2017-12168 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHEA-2017:3163 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-617 -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CWE Red Hat, Inc. CWE-617 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-20 CWE-617 -
Initial Analysis by [email protected]
Sep. 22, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1492984 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1492984 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 No Types Assigned https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 Issue Tracking, Patch, Third Party Advisory Changed Reference Type http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 No Types Assigned http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 Release Notes, Vendor Advisory Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 Issue Tracking, Patch, Third Party Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:4.8.10:*:*:*:*:*:*:* (and previous)
Vulnerability Scoring Details
Base CVSS Score: 6
Base CVSS Score: 4.9
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} -0.17%
score
0.13183
percentile