5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.006 Low
EPSS
Percentile
78.1%
Issue Overview:
A NULL pointer dereference issue was found in the Linux kernel. If the close() and fchownat() system calls share a socket file descriptor as an argument, then the two calls can race and trigger a NULL pointer dereference leading to a system crash and a denial of service.(CVE-2018-12232)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
New Packages:
i686:
kernel-headers-4.14.51-66.38.amzn2.i686
src:
kernel-4.14.51-66.38.amzn2.src
x86_64:
kernel-4.14.51-66.38.amzn2.x86_64
kernel-headers-4.14.51-66.38.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.51-66.38.amzn2.x86_64
perf-4.14.51-66.38.amzn2.x86_64
perf-debuginfo-4.14.51-66.38.amzn2.x86_64
python-perf-4.14.51-66.38.amzn2.x86_64
python-perf-debuginfo-4.14.51-66.38.amzn2.x86_64
kernel-tools-4.14.51-66.38.amzn2.x86_64
kernel-tools-devel-4.14.51-66.38.amzn2.x86_64
kernel-tools-debuginfo-4.14.51-66.38.amzn2.x86_64
kernel-devel-4.14.51-66.38.amzn2.x86_64
kernel-debuginfo-4.14.51-66.38.amzn2.x86_64
Red Hat: CVE-2018-12232
Mitre: CVE-2018-12232
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 High
AI Score
Confidence
High
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.006 Low
EPSS
Percentile
78.1%