PT-2018-3625 · Linux+3 · Linux Kernel+3

Chengyu Song + 3 · Published 2018-07-31 · Updated 2019-10-03 · CVE-2018-15572

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.18.1

Description The issue is related to the spectre v2 select mitigation function in the Linux kernel, which does not always fill RSB upon a context switch. This makes it easier for attackers to conduct userspace-userspace spectreRSB attacks, potentially allowing them to access confidential data.

Recommendations For Linux kernel versions prior to 4.18.1, update to version 4.18.1 or later to resolve the issue.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2018-2192

ALT-PU-2018-2210

ALT-PU-2019-1433

BDU:2021-01418

CVE-2018-15572

DLA-1529-1

DLA-1531-1

DSA-4308-1

OPENSUSE-SU-2018_2738-1

OPENSUSE-SU-2018_3071-1

SUSE-SU-2018:2538-1

SUSE-SU-2018:2539-1

SUSE-SU-2018:2775-1

SUSE-SU-2018:2776-1

SUSE-SU-2018:2858-1

SUSE-SU-2018:2862-1

SUSE-SU-2018:2879-1

SUSE-SU-2018:2907-1

SUSE-SU-2018:3084-1

SUSE-SU-2018:3088-1

SUSE-SU-2018:3961-1

SUSE-SU-2019:1289-1

USN-3775-1

USN-3775-2

USN-3776-1

USN-3776-2

USN-3777-1

USN-3777-2

USN-3777-3

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 645

• https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346 · Patch
• https://ubuntu.com/security/notices/USN-3777-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-17182 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2539-1 · Vendor Advisory
• https://usn.ubuntu.com/3776-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-15572 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2858-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15572 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2907-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3775-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:3088-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1531-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-14634 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10902 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3776-1 · Vendor Advisory