CVEvulnerability

CVE-2024-27390

5.5 MEDIUM Published 2024-05-01 Modified 2026-07-24 Official page ↗
Status
Modified
Published
2024-05-01
Last modified
2026-07-24
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Affected configurations

• linux linux kernel (>= 5.13 < 5.15.153) • linux linux kernel (>= 5.16 < 6.1.83) • linux linux kernel (>= 6.2 < 6.6.23) • linux linux kernel (>= 6.7 < 6.7.11) • linux linux kernel (>= 6.8 < 6.8.2)

References