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CVE-2021-4028

Published: Aug 24, 2022

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	kernel	affected `Fixed in kernel 5.15-rc1`

Weaknesses (CWE)

References

https://lkml.org/lkml/2021/10/4/697

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74

https://bugzilla.redhat.com/show_bug.cgi?id=2027201

https://access.redhat.com/security/cve/CVE-2021-4028

https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0

https://security.netapp.com/advisory/ntap-20221228-0002/

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