CVE-2022-49590: 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_llm_reports. While reading sysctl_igmp_llm_reports, 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. if (ipv4_is_local_multicast(pmc->multiaddr) && !READ_ONCE(net->ipv4.sysctl_igmp_llm_reports))

Affected products

• Linux Linux Kernel: from 4.3, before 4.9.325 (fixed in 4.9.325); from 4.10, before 4.14.290 (fixed in 4.14.290); from 4.15, before 4.19.254 (fixed in 4.19.254); from 4.20, before 5.4.208 (fixed in 5.4.208); from 5.5, before 5.10.134 (fixed in 5.10.134); from 5.11, before 5.15.58 (fixed in 5.15.58); …

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