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ubuntucveUbuntu.comUB:CVE-2018-12232
HistoryJun 12, 2018 - 12:00 a.m.

CVE-2018-12232

2018-06-1200:00:00
ubuntu.com
ubuntu.com
12

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

7.1 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

78.2%

JSON

In net/socket.c in the Linux kernel through 4.17.1, there is a race
condition between fchownat and close in cases where they target the same
socket file descriptor, related to the sock_close and sockfs_setattr
functions. fchownat does not increment the file descriptor reference count,
which allows close to set the socket to NULL during fchownat’s execution,
leading to a NULL pointer dereference and system crash.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-33.36UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1020.20UNKNOWN
ubuntu18.04noarchlinux-azure< 4.15.0-1022.23UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1022.22~16.04.1UNKNOWN
ubuntu16.04noarchlinux-azure-edge< 4.15.0-1022.23UNKNOWN
ubuntu18.04noarchlinux-gcp< 4.15.0-1018.19UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1018.19~16.04.2UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.15.0-33.36~16.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe-edge< 4.15.0-33.36~16.04.1UNKNOWN
ubuntu18.04noarchlinux-kvm< 4.15.0-1020.20UNKNOWN
Rows per page:
1-10 of 121

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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

7.1 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

78.2%

JSON
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