CVE-2018-13099

2018-07-0300:00:00

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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

44.6%

JSON

An issue was discovered in fs/f2fs/inline.c in the Linux kernel through
4.4. A denial of service (out-of-bounds memory access and BUG) can occur
for a modified f2fs filesystem image in which an inline inode contains an
invalid reserved blkaddr.

Notes

Author	Note
sbeattie	possible reproducer in kernel bugzilla fix subject “f2fs: fix to do sanity check with reserved blkaddr of inline inode”
tyhicks	The affected user base for this issue is likely small since f2fs is not the default filesystem and it is not widely used in Ubuntu

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-58.64UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-145.171UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1047.49UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1040.43UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1079.89UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1047.49~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure< 4.18.0-1011.11~18.04.1UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1055.60UNKNOWN
ubuntu18.04noarchlinux-azure-edge< 4.18.0-1011.11~18.04.1UNKNOWN
ubuntu16.04noarchlinux-azure-edge< 4.15.0-1055.60UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-58.64	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-145.171	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1047.49	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1040.43	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1079.89	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1047.49~16.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-azure	< 4.18.0-1011.11~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-azure	< 4.15.0-1055.60	UNKNOWN
ubuntu	18.04	noarch	linux-azure-edge	< 4.18.0-1011.11~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-azure-edge	< 4.15.0-1055.60	UNKNOWN