UBUNTU-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 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.
02 / AFFECTED SOFTWARE
Affected packages
8 explicit affected versions
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2 explicit affected versions
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13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
3 explicit affected versions
45 explicit affected versions
7 explicit affected versions
46 explicit affected versions
12 explicit affected versions
5 explicit affected versions
11 explicit affected versions
29 explicit affected versions
13 explicit affected versions
6 explicit affected versions
43 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
52 explicit affected versions
4 explicit affected versions
38 explicit affected versions
49 explicit affected versions
38 explicit affected versions
13 explicit affected versions
35 explicit affected versions
5 explicit affected versions
14 explicit affected versions
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4 explicit affected versions
7 explicit affected versions
33 explicit affected versions
5 explicit affected versions
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7 explicit affected versions
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5 explicit affected versions
7 explicit affected versions
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36 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
12 explicit affected versions
10 explicit affected versions
37 explicit affected versions
13 explicit affected versions
10 explicit affected versions
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26 explicit affected versions
13 explicit affected versions
4 explicit affected versions
29 explicit affected versions
13 explicit affected versions
10 explicit affected versions
49 explicit affected versions
47 explicit affected versions
9 explicit affected versions
33 explicit affected versions
3 explicit affected versions
23 explicit affected versions
10 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
37 explicit affected versions
30 explicit affected versions
46 explicit affected versions
26 explicit affected versions
6 explicit affected versions
1 explicit affected versions
6 explicit affected versions
13 explicit affected versions
5 explicit affected versions
16 explicit affected versions
49 explicit affected versions
6 explicit affected versions
39 explicit affected versions
2 explicit affected versions
51 explicit affected versions
3 explicit affected versions
12 explicit affected versions
35 explicit affected versions
27 explicit affected versions
21 explicit affected versions
8 explicit affected versions
10 explicit affected versions
41 explicit affected versions
10 explicit affected versions
12 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
35 explicit affected versions
37 explicit affected versions
6 explicit affected versions
14 explicit affected versions
38 explicit affected versions
7 explicit affected versions
39 explicit affected versions
9 explicit affected versions
38 explicit affected versions
11 explicit affected versions
46 explicit affected versions
20 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
44 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
1 explicit affected versions
14 explicit affected versions
4 explicit affected versions
11 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/17ef8efc00b34918b966388b2af0993811895a8c
- https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c
- https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373
- https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88
- https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7
- https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50
- https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04
- https://ubuntu.com/security/CVE-2024-27390
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6820-1
- https://ubuntu.com/security/notices/USN-6820-2
- https://ubuntu.com/security/notices/USN-6821-1
- https://ubuntu.com/security/notices/USN-6821-2
- https://ubuntu.com/security/notices/USN-6821-3
- https://ubuntu.com/security/notices/USN-6821-4
- https://ubuntu.com/security/notices/USN-6828-1
- https://ubuntu.com/security/notices/USN-6871-1
- https://ubuntu.com/security/notices/USN-6878-1
- https://ubuntu.com/security/notices/USN-6892-1
- https://ubuntu.com/security/notices/USN-6919-1
- https://www.cve.org/CVERecord?id=CVE-2024-27390