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PUBLISHED

CVE-2024-27390

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

Reserved:2024-02-25
Published:2024-05-01
Updated:2024-05-13

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.

Product status

Default status
unaffected

f185de28d9ae before 9d159d6637cc
affected

f185de28d9ae before a03ede2282eb
affected

f185de28d9ae before 26d4bac55750
affected

f185de28d9ae before 7eb06ee59211
affected

f185de28d9ae before 5da9a218340a
affected

f185de28d9ae before 17ef8efc00b3
affected

Default status
affected

5.13
affected

Any version before 5.13
unaffected

5.15.153
unaffected

6.1.83
unaffected

6.6.23
unaffected

6.7.11
unaffected

6.8.2
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50

https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04

https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373

https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7

https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88

https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c

cve.org CVE-2024-27390

nvd.nist.gov CVE-2024-27390

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