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.
Published 2022-08-24 16:15:09
Updated 2023-02-10 16:18:15
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionExecute code

Exploit prediction scoring system (EPSS) score for CVE-2021-4028

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-4028

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST

CWE ids for CVE-2021-4028

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by:
    • nvd@nist.gov (Secondary)
    • secalert@redhat.com (Primary)

References for CVE-2021-4028

Products affected by CVE-2021-4028

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