CVE-2018-1093

2018-04-0100:00:00

ubuntu.com

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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

0.002 Low

EPSS

Percentile

60.8%

JSON

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux
kernel through 4.15.15 allows attackers to cause a denial of service
(out-of-bounds read and system crash) via a crafted ext4 image because
balloc.c and ialloc.c do not validate bitmap block numbers.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-33.36UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-157.207UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-128.154UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1020.20UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1023.23UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1061.70UNKNOWN
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

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-33.36	UNKNOWN
ubuntu	14.04	noarch	linux	< 3.13.0-157.207	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-128.154	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1020.20	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1023.23	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1061.70	UNKNOWN
ubuntu	18.04	noarch	linux-azure	< 4.15.0-1022.23	UNKNOWN
ubuntu	16.04	noarch	linux-azure	< 4.15.0-1022.22~16.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-azure-edge	< 4.15.0-1022.23	UNKNOWN
ubuntu	18.04	noarch	linux-gcp	< 4.15.0-1018.19	UNKNOWN