CVE-2024-27390
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedMay 1, 2024
First seenMay 1, 2024
How to fix
Update
- linux linux_kernel5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.13 ≤ v < 5.15.153, 5.16 ≤ v < 6.1.83, 6.2 ≤ v < 6.6.23, 6.7 ≤ v < 6.7.11, 6.8 ≤ v < 6.8.2 | 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2 |
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