CVE-2018-25020

2021-12-0800:00:00

ubuntu.com

cve-2018-25020

bpf subsystem

linux kernel

overflow vulnerability

core.c

filter.c

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

12.6%

JSON

The BPF subsystem in the Linux kernel before 4.17 mishandles situations
with a long jump over an instruction sequence where inner instructions
require substantial expansions into multiple BPF instructions, leading to
an overflow. This affects kernel/bpf/core.c and net/core/filter.c.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-166.174UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1118.125UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1118.125~16.04.1UNKNOWN
ubuntu14.04noarchlinux-azure< 4.15.0-1129.142~14.04.1UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1129.142~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-4.15< 4.15.0-1129.142UNKNOWN
ubuntu18.04noarchlinux-dell300x< 4.15.0-1033.38UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1114.128~16.04.1UNKNOWN
ubuntu18.04noarchlinux-gcp-4.15< 4.15.0-1114.128UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.15.0-166.174~16.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-166.174	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1118.125	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1118.125~16.04.1	UNKNOWN
ubuntu	14.04	noarch	linux-azure	< 4.15.0-1129.142~14.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-azure	< 4.15.0-1129.142~16.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-azure-4.15	< 4.15.0-1129.142	UNKNOWN
ubuntu	18.04	noarch	linux-dell300x	< 4.15.0-1033.38	UNKNOWN
ubuntu	16.04	noarch	linux-gcp	< 4.15.0-1114.128~16.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-gcp-4.15	< 4.15.0-1114.128	UNKNOWN
ubuntu	16.04	noarch	linux-hwe	< 4.15.0-166.174~16.04.1	UNKNOWN