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.
References (7)
Core 7
Core References
Scores
CVSS v3
5.5
EPSS
0.0022
EPSS Percentile
13.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
Status
published
Products (21)
linux/Kernel
5.13.0 - 5.15.153linux
linux/Kernel
5.16.0 - 6.1.83linux
linux/Kernel
6.2.0 - 6.6.23linux
linux/Kernel
6.7.0 - 6.7.11linux
linux/Kernel
6.8.0 - 6.8.2linux
Linux/Linux
< 5.13
Linux/Linux
5.13
Linux/Linux
5.15.153 - 5.15.*
Linux/Linux
6.1.83 - 6.1.*
Linux/Linux
6.6.23 - 6.6.*
... and 11 more
Published
May 01, 2024
Tracked Since
Feb 18, 2026