CVE-2024-27390
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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8cPatch
- https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373Patch
- https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88Patch
- https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7Patch
- https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50Patch
- https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04Patch
- https://git.kernel.org/stable/c/bfd2f3c58ad86ad33db80515e6c3503e0414e44b
- https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8cPatch
- https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373Patch
- https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88Patch
- https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7Patch
- https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50Patch
- https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.