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ubuntucveUbuntu.comUB:CVE-2018-7740
HistoryMar 07, 2018 - 12:00 a.m.

CVE-2018-7740

2018-03-0700:00:00
ubuntu.com
ubuntu.com
12

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/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

0.0004 Low

EPSS

Percentile

5.3%

The resv_map_release function in mm/hugetlb.c in the Linux kernel through
4.15.7 allows local users to cause a denial of service (BUG) via a crafted
application that makes mmap system calls and has a large pgoff argument to
the remap_file_pages system call.

Notes

Author Note
sbeattie 045c7a3f tried to catch issues like this, but missed this case. ff8c0c53c475 and 045c7a3f may also be needed for older releases
OSVersionArchitecturePackageVersionFilename
ubuntu16.04noarchlinux< 4.4.0-143.169UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1039.42UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1077.87UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1013.13~16.04.2UNKNOWN
ubuntu16.04noarchlinux-azure-edge< 4.15.0-1013.13~16.04.2UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1014.14~16.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.15.0-24.26~16.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe-edge< 4.15.0-24.26~16.04.1UNKNOWN
ubuntu16.04noarchlinux-kvm< 4.4.0-1041.47UNKNOWN
ubuntu14.04noarchlinux-lts-xenial< 4.4.0-143.169~14.04.2UNKNOWN
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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/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

0.0004 Low

EPSS

Percentile

5.3%