UBUNTU-CVE-2022-4129
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
02 / AFFECTED SOFTWARE
Affected packages
12 explicit affected versions
18 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
27 explicit affected versions
13 explicit affected versions
35 explicit affected versions
24 explicit affected versions
13 explicit affected versions
19 explicit affected versions
191 explicit affected versions
5 explicit affected versions
21 explicit affected versions
61 explicit affected versions
85 explicit affected versions
35 explicit affected versions
10 explicit affected versions
118 explicit affected versions
8 explicit affected versions
13 explicit affected versions
4 explicit affected versions
121 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
18 explicit affected versions
7 explicit affected versions
12 explicit affected versions
111 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
66 explicit affected versions
25 explicit affected versions
74 explicit affected versions
12 explicit affected versions
63 explicit affected versions
120 explicit affected versions
10 explicit affected versions
37 explicit affected versions
3 explicit affected versions
1 explicit affected versions
10 explicit affected versions
26 explicit affected versions
13 explicit affected versions
144 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
24 explicit affected versions
1 explicit affected versions
23 explicit affected versions
66 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
188 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
65 explicit affected versions
138 explicit affected versions
2 explicit affected versions
13 explicit affected versions
6 explicit affected versions
132 explicit affected versions
21 explicit affected versions
165 explicit affected versions
154 explicit affected versions
63 explicit affected versions
5 explicit affected versions
26 explicit affected versions
4 explicit affected versions
139 explicit affected versions
16 explicit affected versions
24 explicit affected versions
14 explicit affected versions
116 explicit affected versions
93 explicit affected versions
1 explicit affected versions
32 explicit affected versions
42 explicit affected versions
92 explicit affected versions
12 explicit affected versions
13 explicit affected versions
2 explicit affected versions
1 explicit affected versions
1 explicit affected versions
98 explicit affected versions
3 explicit affected versions
5 explicit affected versions
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1 explicit affected versions
54 explicit affected versions
13 explicit affected versions
20 explicit affected versions
140 explicit affected versions
94 explicit affected versions
16 explicit affected versions
10 explicit affected versions
3 explicit affected versions
12 explicit affected versions
50 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
10 explicit affected versions
37 explicit affected versions
38 explicit affected versions
167 explicit affected versions
14 explicit affected versions
9 explicit affected versions
14 explicit affected versions
6 explicit affected versions
22 explicit affected versions
54 explicit affected versions
97 explicit affected versions
29 explicit affected versions
121 explicit affected versions
4 explicit affected versions
19 explicit affected versions
53 explicit affected versions
43 explicit affected versions
20 explicit affected versions
4 explicit affected versions
54 explicit affected versions
4 explicit affected versions
43 explicit affected versions
1 explicit affected versions
69 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
05 / REFERENCES
Further evidence
- https://lore.kernel.org/all/[email protected]/t
- https://lore.kernel.org/netdev/[email protected]/t
- https://ubuntu.com/security/CVE-2022-4129
- https://ubuntu.com/security/notices/USN-6025-1
- https://ubuntu.com/security/notices/USN-6027-1
- https://ubuntu.com/security/notices/USN-6040-1
- https://ubuntu.com/security/notices/USN-6057-1
- https://ubuntu.com/security/notices/USN-6079-1
- https://ubuntu.com/security/notices/USN-6091-1
- https://ubuntu.com/security/notices/USN-6093-1
- https://ubuntu.com/security/notices/USN-6096-1
- https://ubuntu.com/security/notices/USN-6134-1
- https://ubuntu.com/security/notices/USN-6222-1
- https://ubuntu.com/security/notices/USN-6256-1
- https://www.cve.org/CVERecord?id=CVE-2022-4129