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prionPRIOn knowledge basePRION:CVE-2021-4028
HistoryAug 24, 2022 - 4:15 p.m.

Design/Logic Flaw

2022-08-2416:15:00
PRIOn knowledge base
www.prio-n.com
18
linux kernel
rdma
communication manager
listener code
use-after-free
privilege escalation
local access

AI Score

7.8

Confidence

High

EPSS

0

Percentile

5.1%

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.