CVE-2022-49589: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: igmp: Fix data-races around sysctl_igmp_qrv. While reading sysctl_igmp_qrv, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. This test can be packed into a helper, so such changes will be in the follow-up series after net is merged into net-next. qrv ?: READ_ONCE(net->ipv4.sysctl_igmp_qrv);

Affected products

• Linux Linux Kernel: from 3.18, before 4.19.255 (fixed in 4.19.255); from 4.20, before 5.4.209 (fixed in 5.4.209); from 5.5, before 5.10.135 (fixed in 5.10.135); from 5.11, before 5.15.59 (fixed in 5.15.59); from 5.16, before 5.18.15 (fixed in 5.18.15); version 5.19 only

Published 2025-02-26. Last modified 2026-06-17.