CVE-2021-4028

 

Published at: - 24-08-2022 06:15

Last modified: - 26-10-2022 01:44

Total changes: - 4

Description

A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://lkml.org/lkml/2021/10/4/697
• https://bugzilla.redhat.com/show_bug.cgi?id=2027201
• https://access.redhat.com/security/cve/CVE-2021-4028
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74
• https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0

 

Keywords

NVD

 

CVE-2021-4028

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures