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CVE-2022-20141

kernel: igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 16, 2021

Updated · June 28, 2026

Description

A use-after-free flaw was found in the Linux kernel’s IGMP protocol in how a user triggers a race condition in the ip_check_mc_rcu function. This flaw allows a local user to crash or potentially escalate their privileges on the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-667 · Improper Locking