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vulnerability

Oracle Linux: CVE-2021-4203: ELSA-2022-1988: kernel security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:N/A:P)
Published
Sep 29, 2021
Added
May 4, 2022
Modified
Jul 21, 2025

Description

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

Solutions

oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek
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