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ubuntucveUbuntu.comUB:CVE-2019-19816
HistoryDec 17, 2019 - 12:00 a.m.

CVE-2019-19816

2019-12-1700:00:00
ubuntu.com
ubuntu.com
14

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

46.4%

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and
performing some operations can cause slab-out-of-bounds write access in
__btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the
number of data stripes is mishandled.

Bugs

Notes

Author Note
tyhicks As of 2020-01-09, no upstream fix is available
sbeattie upstream developer asserts in suse bug that the enhanced btrfs tree-checker will address this issue, so would be fixed in 4.4.x and newer
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-109.110UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-201.233UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1077.81UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1085.89UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1121.135UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1079.83~16.04.1UNKNOWN
ubuntu14.04noarchlinux-azure< 4.15.0-1091.101~14.04.1UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1091.101~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-4.15< 4.15.0-1091.101UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1080.90~16.04.1UNKNOWN
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9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

46.4%