UBUNTU-CVE-2020-25211
In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.
02 / AFFECTED SOFTWARE
Affected packages
191 explicit affected versions
52 explicit affected versions
16 explicit affected versions
86 explicit affected versions
49 explicit affected versions
6 explicit affected versions
6 explicit affected versions
33 explicit affected versions
6 explicit affected versions
61 explicit affected versions
23 explicit affected versions
1 explicit affected versions
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23 explicit affected versions
54 explicit affected versions
16 explicit affected versions
9 explicit affected versions
10 explicit affected versions
32 explicit affected versions
3 explicit affected versions
53 explicit affected versions
31 explicit affected versions
1 explicit affected versions
1 explicit affected versions
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13 explicit affected versions
48 explicit affected versions
1 explicit affected versions
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28 explicit affected versions
10 explicit affected versions
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88 explicit affected versions
17 explicit affected versions
2 explicit affected versions
51 explicit affected versions
11 explicit affected versions
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1 explicit affected versions
118 explicit affected versions
9 explicit affected versions
64 explicit affected versions
1 explicit affected versions
11 explicit affected versions
7 explicit affected versions
1 explicit affected versions
7 explicit affected versions
1 explicit affected versions
9 explicit affected versions
75 explicit affected versions
7 explicit affected versions
33 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
38 explicit affected versions
9 explicit affected versions
96 explicit affected versions
7 explicit affected versions
79 explicit affected versions
31 explicit affected versions
41 explicit affected versions
2 explicit affected versions
6 explicit affected versions
43 explicit affected versions
1 explicit affected versions
12 explicit affected versions
11 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6
- https://lore.kernel.org/stable/[email protected]/
- https://twitter.com/grsecurity/status/1303646421158109185
- https://ubuntu.com/security/CVE-2020-25211
- https://ubuntu.com/security/notices/USN-4657-1
- https://ubuntu.com/security/notices/USN-4658-1
- https://ubuntu.com/security/notices/USN-4660-1
- https://www.cve.org/CVERecord?id=CVE-2020-25211