CVE-2022-49153
kernel: wireguard: socket: free skb in send6 when ipv6 is disabled
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 26, 2025
Updated · June 30, 2026
Description
A flaw was found in the WireGuard module in the Linux kernel. A memory leak can occur due to a missing memory release when the IPv6 (CONFIG_IPV6) support is disabled, potentially impacting system performance and possibly resulting in a denial of service.
Statement
The WireGuard module is not built in the Linux kernel as shipped in Red Hat Enterprise Linux 6, 7 and 8, so this vulnerability does not affect these Red Hat Enterprise Linux versions.
This issue has been fixed in Red Hat Enterprise Linux 9.1 via RHSA-2022:8267 [1].
[1]. https://access.redhat.com/errata/RHSA-2022:8267
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
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 · Missing Release of Memory after Effective Lifetime