PT-2020-5185 · Linux+3 · Linux Kernel+3

Published 2020-08-11 · Updated 2022-04-27 · CVE-2020-26088

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.8.2

Description The issue is related to a missing CAP NET RAW check in NFC socket creation in the Linux kernel. This could allow local attackers to create raw sockets, bypassing security mechanisms.

Recommendations For Linux kernel versions prior to 5.8.2, update to version 5.8.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the net/nfc/rawsock.c function to minimize the risk of exploitation.

Fix

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

ALT-PU-2020-2688

ALT-PU-2020-2716

ALT-PU-2020-2770

ALT-PU-2020-3210

ALT-PU-2021-1083

ALT-PU-2021-1105

ALT-PU-2021-1621

ALT-PU-2021-1656

ALT-PU-2021-1739

ALT-PU-2021-1862

ALT-PU-2021-1866

ALT-PU-2021-1870

BDU:2020-05802

CVE-2020-26088

DLA-2385-1

DLA-2420-1

DLA-2420-2

OPENSUSE-SU-2020:1586-1

OPENSUSE-SU-2020:1655-1

OPENSUSE-SU-2020_1586-1

OPENSUSE-SU-2020_1655-1

OPENSUSE-SU-2021:0242-1

OPENSUSE-SU-2021_0242-1

SUSE-SU-2020:2879-1

SUSE-SU-2020:2904-1

SUSE-SU-2020:2905-1

SUSE-SU-2020:2906-1

SUSE-SU-2020:2907-1

SUSE-SU-2020:2908-1

SUSE-SU-2020:2999-1

SUSE-SU-2020:3014-1

SUSE-SU-2020:3501-1

SUSE-SU-2020:3503-1

SUSE-SU-2020:3532-1

SUSE-SU-2020:3544-1

USN-4578-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 972

• https://github.com/torvalds/linux/commit/26896f01467a28651f7a536143fe5ac8449d4041 · Patch
• https://ubuntu.com/security/CVE-2020-25212 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:2908-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4578-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14314 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3532-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3014-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-26088 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2420-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10322 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-05802 · Security Note
• https://cve.org/CVERecord?id=CVE-2020-26088 · Security Note