https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T03:52:00.202152+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2024-27390 CVE-2024-27390 — ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() 2026-09-29T03:52:00.203771+00:00

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()

As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed.

Under load, synchronize_net() can last between 200 usec and 5 ms.

KASAN seems to agree as well.