Ubuntu.comUB:CVE-2017-12168CVE-2017-12168
6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
24.2%
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).
Notes
| Author | Note |
|---|---|
| smb | Affected code was added in 4.6 only. Adding proper breaks sha1. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux-hwe-edge | < 4.18.0-8.9~18.04.1 | UNKNOWN |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11
bugzilla.redhat.com/show_bug.cgi?id=1492984
git.kernel.org/linus/9e3f7a29694049edd728e2400ab57ad7553e5aa9 (4.9-rc6)
github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9
launchpad.net/bugs/cve/CVE-2017-12168
nvd.nist.gov/vuln/detail/CVE-2017-12168
security-tracker.debian.org/tracker/CVE-2017-12168
www.cve.org/CVERecord?id=CVE-2017-12168
Related
6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
24.2%