Ubuntu.comUB:CVE-2018-7995CVE-2018-7995
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
5.1%
DISPUTED Race condition in the store_int_with_restart() function in
arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows
local users to cause a denial of service (panic) by leveraging root access
to write to the check_interval file in a
/sys/devices/system/machinecheck/machinecheck<cpu number> directory. NOTE:
a third party has indicated that this report is not security relevant.
Notes
| Author | Note |
|---|---|
| sbeattie | requires root privileges to write to the machinecheck sysfs files |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | linux | < 4.4.0-127.153 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1022.22 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1060.69 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1013.13~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure-edge | < 4.15.0-1013.13~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.15.0-1014.14~16.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | < 4.15.0-24.26~16.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.15.0-24.26~16.04.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-kvm | < 4.4.0-1026.31 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-127.153~14.04.1 | UNKNOWN |
References
git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b3b7c4795ccab5be71f080774c45bbbcc75c2aaf
launchpad.net/bugs/cve/CVE-2018-7995
lkml.org/lkml/2018/3/2/970
nvd.nist.gov/vuln/detail/CVE-2018-7995
security-tracker.debian.org/tracker/CVE-2018-7995
ubuntu.com/security/notices/USN-3654-1
ubuntu.com/security/notices/USN-3654-2
ubuntu.com/security/notices/USN-3656-1
www.cve.org/CVERecord?id=CVE-2018-7995
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
5.1%