UBUNTU-CVE-2022-34918
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.
02 / AFFECTED SOFTWARE
Affected packages
3 explicit affected versions
7 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
14 explicit affected versions
1 explicit affected versions
23 explicit affected versions
11 explicit affected versions
2 explicit affected versions
8 explicit affected versions
86 explicit affected versions
9 explicit affected versions
49 explicit affected versions
66 explicit affected versions
39 explicit affected versions
22 explicit affected versions
1 explicit affected versions
99 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
76 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
8 explicit affected versions
7 explicit affected versions
12 explicit affected versions
1 explicit affected versions
12 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
54 explicit affected versions
13 explicit affected versions
62 explicit affected versions
12 explicit affected versions
52 explicit affected versions
41 explicit affected versions
10 explicit affected versions
142 explicit affected versions
36 explicit affected versions
75 explicit affected versions
63 explicit affected versions
1 explicit affected versions
1 explicit affected versions
26 explicit affected versions
13 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
80 explicit affected versions
11 explicit affected versions
1 explicit affected versions
11 explicit affected versions
54 explicit affected versions
33 explicit affected versions
13 explicit affected versions
10 explicit affected versions
65 explicit affected versions
11 explicit affected versions
12 explicit affected versions
88 explicit affected versions
7 explicit affected versions
52 explicit affected versions
2 explicit affected versions
2 explicit affected versions
9 explicit affected versions
83 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
3 explicit affected versions
1 explicit affected versions
20 explicit affected versions
31 explicit affected versions
42 explicit affected versions
12 explicit affected versions
3 explicit affected versions
1 explicit affected versions
1 explicit affected versions
46 explicit affected versions
5 explicit affected versions
44 explicit affected versions
1 explicit affected versions
41 explicit affected versions
13 explicit affected versions
9 explicit affected versions
42 explicit affected versions
4 explicit affected versions
10 explicit affected versions
12 explicit affected versions
38 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
36 explicit affected versions
38 explicit affected versions
2 explicit affected versions
9 explicit affected versions
2 explicit affected versions
119 explicit affected versions
10 explicit affected versions
42 explicit affected versions
54 explicit affected versions
19 explicit affected versions
96 explicit affected versions
73 explicit affected versions
4 explicit affected versions
29 explicit affected versions
7 explicit affected versions
64 explicit affected versions
42 explicit affected versions
43 explicit affected versions
9 explicit affected versions
97 explicit affected versions
114 explicit affected versions
42 explicit affected versions
4 explicit affected versions
31 explicit affected versions
1 explicit affected versions
20 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2022/07/05/1
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1f6cabcd30aba0b11219d8e01b952eacbb6
- https://lore.kernel.org/netfilter-devel/[email protected]/T/#u
- https://ubuntu.com/security/CVE-2022-34918
- https://ubuntu.com/security/notices/USN-5540-1
- https://ubuntu.com/security/notices/USN-5544-1
- https://ubuntu.com/security/notices/USN-5545-1
- https://ubuntu.com/security/notices/USN-5560-1
- https://ubuntu.com/security/notices/USN-5560-2
- https://ubuntu.com/security/notices/USN-5562-1
- https://ubuntu.com/security/notices/USN-5564-1
- https://ubuntu.com/security/notices/USN-5566-1
- https://ubuntu.com/security/notices/USN-5582-1
- https://www.cve.org/CVERecord?id=CVE-2022-34918
- https://www.openwall.com/lists/oss-security/2022/07/02/3
- https://www.randorisec.fr/crack-linux-firewall/