PT-2018-18644 · Linux+3 · Linux Kernel+3

Dr Silvio Cesare · Published 2018-03-20 · Updated 2024-06-15 · CVE-2018-8822

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 4.15.11 Linux kernel versions 4.16-rc through 4.16-rc6

Description The issue is related to incorrect buffer length handling in the ncp read kernel function, which could be exploited by malicious NCPFS servers to crash the kernel or execute code.

Recommendations For Linux kernel versions through 4.15.11, update to a version later than 4.15.11 to resolve the issue. For Linux kernel versions 4.16-rc through 4.16-rc6, update to a version later than 4.16-rc6 to resolve the issue. As a temporary workaround, consider restricting access to the ncp read kernel function in fs/ncpfs/ncplib kernel.c and drivers/staging/ncpfs/ncplib kernel.c to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2018-1557

ALT-PU-2019-1433

CVE-2018-8822

DLA-1369-1

DSA-4187-1

DSA-4188-1

OPENSUSE-SU-2018_1418-1

OPENSUSE-SU-2024:10728-1

OPENSUSE-SU-2024:13704-1

SUSE-SU-2018:1048-1

SUSE-SU-2018:1080-1

SUSE-SU-2018:1172-1

SUSE-SU-2018:1173-1

SUSE-SU-2018:1173-2

SUSE-SU-2018:1217-1

SUSE-SU-2018:1220-1

SUSE-SU-2018:1221-1

SUSE-SU-2018:1309-1

USN-3653-1

USN-3653-2

USN-3654-1

USN-3654-2

USN-3655-1

USN-3655-2

USN-3656-1

USN-3657-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 454

• https://ubuntu.com/security/notices/USN-3653-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1217-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18222 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3657-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-8822 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1065 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-13305 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4188-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17975 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3656-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1080-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7995 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-8781 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18193 · Vendor Advisory