Vulnerability Details : CVE-2018-7995
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
Vulnerability category: Denial of service
Products affected by CVE-2018-7995
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-7995
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-7995
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | AV:L/AC:M/Au:N/C:N/I:N/A:C |
3.4
|
6.9
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2018-7995
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-7995
-
https://usn.ubuntu.com/3654-1/
USN-3654-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lkml.org/lkml/2018/3/2/970
LKML: Seunghun Han: [PATCH V3] x86: mce: fix kernel panic when check_interval is changedPatch;Third Party Advisory
-
https://usn.ubuntu.com/3656-1/
USN-3656-1: Linux kernel (Raspberry Pi 2, Snapdragon) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3654-2/
USN-3654-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://www.debian.org/security/2018/dsa-4188
Debian -- Security Information -- DSA-4188-1 linuxThird Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=1084755
Bug 1084755 – VUL-0: CVE-2018-7995: kernel: 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 aIssue Tracking;Third Party Advisory
-
http://www.securityfocus.com/bid/103356
Linux Kernel 'arch/x86/kernel/cpu/mcheck/mce.c' Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b3b7c4795ccab5be71f080774c45bbbcc75c2aaf
kernel/git/tip/tip.git - Unnamed repository; edit this file 'description' to name the repository.Patch;Vendor Advisory
-
https://www.debian.org/security/2018/dsa-4187
Debian -- Security Information -- DSA-4187-1 linuxThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
[SECURITY] [DLA 1369-1] linux security updateThird Party Advisory
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