UBUNTU-CVE-2024-42283
In the Linux kernel, the following vulnerability has been resolved: net: nexthop: Initialize all fields in dumped nexthops struct nexthop_grp contains two reserved fields that are not initialized by nla_put_nh_group(), and carry garbage. This can be observed e.g. with strace (edited for clarity): # ip nexthop add id 1 dev lo # ip nexthop add id 101 group 1 # strace -e recvmsg ip nexthop get id 101 ... recvmsg(... [{nla_len=12, nla_type=NHA_GROUP}, [{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52 The fields are reserved and therefore not currently used. But as they are, they leak kernel memory, and the fact they are not just zero complicates repurposing of the fields for new ends. Initialize the full structure.
02 / AFFECTED SOFTWARE
Affected packages
33 explicit affected versions
1 explicit affected versions
88 explicit affected versions
13 explicit affected versions
17 explicit affected versions
17 explicit affected versions
14 explicit affected versions
8 explicit affected versions
13 explicit affected versions
26 explicit affected versions
1 explicit affected versions
1 explicit affected versions
10 explicit affected versions
11 explicit affected versions
38 explicit affected versions
7 explicit affected versions
14 explicit affected versions
52 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
61 explicit affected versions
14 explicit affected versions
47 explicit affected versions
68 explicit affected versions
57 explicit affected versions
47 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
54 explicit affected versions
7 explicit affected versions
53 explicit affected versions
9 explicit affected versions
95 explicit affected versions
13 explicit affected versions
11 explicit affected versions
35 explicit affected versions
14 explicit affected versions
18 explicit affected versions
18 explicit affected versions
15 explicit affected versions
64 explicit affected versions
14 explicit affected versions
97 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
18 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
52 explicit affected versions
16 explicit affected versions
7 explicit affected versions
12 explicit affected versions
45 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
85 explicit affected versions
12 explicit affected versions
100 explicit affected versions
108 explicit affected versions
12 explicit affected versions
9 explicit affected versions
96 explicit affected versions
7 explicit affected versions
10 explicit affected versions
9 explicit affected versions
1 explicit affected versions
10 explicit affected versions
37 explicit affected versions
13 explicit affected versions
29 explicit affected versions
35 explicit affected versions
26 explicit affected versions
13 explicit affected versions
9 explicit affected versions
100 explicit affected versions
18 explicit affected versions
58 explicit affected versions
8 explicit affected versions
9 explicit affected versions
83 explicit affected versions
56 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
98 explicit affected versions
45 explicit affected versions
39 explicit affected versions
55 explicit affected versions
10 explicit affected versions
26 explicit affected versions
16 explicit affected versions
34 explicit affected versions
1 explicit affected versions
13 explicit affected versions
16 explicit affected versions
58 explicit affected versions
16 explicit affected versions
58 explicit affected versions
51 explicit affected versions
46 explicit affected versions
3 explicit affected versions
1 explicit affected versions
2 explicit affected versions
65 explicit affected versions
12 explicit affected versions
44 explicit affected versions
27 explicit affected versions
30 explicit affected versions
1 explicit affected versions
19 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
13 explicit affected versions
13 explicit affected versions
87 explicit affected versions
13 explicit affected versions
52 explicit affected versions
7 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
12 explicit affected versions
87 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
44 explicit affected versions
37 explicit affected versions
17 explicit affected versions
14 explicit affected versions
8 explicit affected versions
7 explicit affected versions
38 explicit affected versions
47 explicit affected versions
9 explicit affected versions
47 explicit affected versions
11 explicit affected versions
55 explicit affected versions
7 explicit affected versions
28 explicit affected versions
59 explicit affected versions
4 explicit affected versions
53 explicit affected versions
13 explicit affected versions
43 explicit affected versions
53 explicit affected versions
10 explicit affected versions
8 explicit affected versions
12 explicit affected versions
14 explicit affected versions
88 explicit affected versions
4 explicit affected versions
77 explicit affected versions
11 explicit affected versions
1 explicit affected versions
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: net: nexthop: Initialize all fields in dumped nexthops struct nexthop_grp contains two reserved fields that are not initialized by nla_put_nh_group(), and carry garbage. This can be observed e.g. with strace (edited for clarity): # ip nexthop add id 1 dev lo # ip nexthop add id 101 group 1 # strace -e recvmsg ip nexthop get id 101 ... recvmsg(... [{nla_len=12, nla_type=NHA_GROUP}, [{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52 The fields are reserved and therefore not currently used. But as they are, they leak kernel memory, and the fact they are not just zero complicates repurposing of the fields for new ends. Initialize the full structure.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/6d745cd0e9720282cd291d36b9db528aea18add2
- https://git.kernel.org/stable/c/1377de719652d868f5317ba8398b7e74c5f0430b
- https://git.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8
- https://git.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2
- https://git.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fb
- https://git.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0
- https://git.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96
- https://git.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cb
- https://ubuntu.com/security/CVE-2024-42283
- https://ubuntu.com/security/notices/USN-7088-1
- https://ubuntu.com/security/notices/USN-7088-2
- https://ubuntu.com/security/notices/USN-7088-3
- https://ubuntu.com/security/notices/USN-7088-4
- https://ubuntu.com/security/notices/USN-7088-5
- https://ubuntu.com/security/notices/USN-7100-1
- https://ubuntu.com/security/notices/USN-7100-2
- https://ubuntu.com/security/notices/USN-7119-1
- https://ubuntu.com/security/notices/USN-7123-1
- https://ubuntu.com/security/notices/USN-7144-1
- https://ubuntu.com/security/notices/USN-7154-1
- https://ubuntu.com/security/notices/USN-7154-2
- https://ubuntu.com/security/notices/USN-7155-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7196-1
- https://www.cve.org/CVERecord?id=CVE-2024-42283