PT-2018-2559 · Linux+5 · Linux Kernel+5

Andy Lutomirski + 1 · Published 2018-06-04 · Updated 2019-09-10 · CVE-2018-14734

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 4.17.11

Description The issue is related to a use-after-free error in the ucma leave multicast function, allowing attackers to cause a denial of service. This occurs because the function accesses a certain data structure after a cleanup step in ucma process join. The exploitation of this issue may lead to a service disruption.

Recommendations For Linux kernel versions through 4.17.11, update to a version later than 4.17.11 to resolve the issue. At the moment, there is no information about additional mitigation measures for this specific issue.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2018-2092

ALT-PU-2018-2094

ALT-PU-2019-1433

BDU:2019-00978

CESA-2019_2029

CVE-2018-14734

DLA-1529-1

DLA-1531-1

DSA-4308-1

OPENSUSE-SU-2018_2404-1

RHSA-2019:0831

RHSA-2019:2029

RHSA-2019:2043

RHSA-2019_2029

RHSA-2019_2043

SUSE-SU-2018:2328-1

SUSE-SU-2018:2344-1

SUSE-SU-2018:2344-2

SUSE-SU-2018:2362-1

SUSE-SU-2018:2374-1

SUSE-SU-2018:2384-1

SUSE-SU-2018:2596-1

SUSE-SU-2018:2879-1

SUSE-SU-2018:2907-1

SUSE-SU-2018:3088-1

SUSE-SU-2019:1422-1

SUSE-SU-2019:1437-1

SUSE-SU-2019:1489-1

SUSE-SU-2019_1422-1

SUSE-SU-2019_1437-1

SUSE-SU-2019_1489-1

USN-3797-1

USN-3797-2

USN-3847-1

USN-3847-2

USN-3847-3

USN-3849-1

USN-3849-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 297

• https://github.com/torvalds/linux/commit/cb2595c1393b4a5211534e6f0a0fbad369e21ad8 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2018:2344-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3847-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3797-1 · Vendor Advisory
• https://debian.org/security/2018/dsa-4308 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb2595c1393b4a5211534e6f0a0fbad369e21ad8 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3797-1 · Vendor Advisory
• https://usn.ubuntu.com/3797-2 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3797-2 · Vendor Advisory
• https://usn.ubuntu.com/3849-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14734 · Security Note
• https://osv.dev/vulnerability/USN-3847-3 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2384-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3849-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12896 · Vendor Advisory