UBUNTU-CVE-2021-45485
In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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57 explicit affected versions
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191 explicit affected versions
69 explicit affected versions
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69 explicit affected versions
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7 explicit affected versions
3 explicit affected versions
32 explicit affected versions
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24 explicit affected versions
10 explicit affected versions
135 explicit affected versions
17 explicit affected versions
68 explicit affected versions
47 explicit affected versions
1 explicit affected versions
19 explicit affected versions
1 explicit affected versions
29 explicit affected versions
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1 explicit affected versions
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33 explicit affected versions
10 explicit affected versions
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11 explicit affected versions
12 explicit affected versions
71 explicit affected versions
7 explicit affected versions
33 explicit affected versions
2 explicit affected versions
67 explicit affected versions
28 explicit affected versions
1 explicit affected versions
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25 explicit affected versions
1 explicit affected versions
1 explicit affected versions
29 explicit affected versions
5 explicit affected versions
22 explicit affected versions
1 explicit affected versions
23 explicit affected versions
4 explicit affected versions
1 explicit affected versions
25 explicit affected versions
10 explicit affected versions
21 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
17 explicit affected versions
38 explicit affected versions
9 explicit affected versions
112 explicit affected versions
23 explicit affected versions
47 explicit affected versions
5 explicit affected versions
79 explicit affected versions
56 explicit affected versions
4 explicit affected versions
13 explicit affected versions
47 explicit affected versions
22 explicit affected versions
43 explicit affected versions
1 explicit affected versions
90 explicit affected versions
95 explicit affected versions
25 explicit affected versions
4 explicit affected versions
12 explicit affected versions
1 explicit affected versions
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.
05 / REFERENCES
Further evidence
- https://arxiv.org/pdf/2112.09604.pdf
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://git.kernel.org/linus/62f20e068ccc50d6ab66fdb72ba90da2b9418c99
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99
- https://ubuntu.com/security/CVE-2021-45485
- https://ubuntu.com/security/notices/USN-5299-1
- https://ubuntu.com/security/notices/USN-5343-1
- https://www.cve.org/CVERecord?id=CVE-2021-45485