UBUNTU-CVE-2022-48938
In the Linux kernel, the following vulnerability has been resolved: CDC-NCM: avoid overflow in sanity checking A broken device may give an extreme offset like 0xFFF0 and a reasonable length for a fragment. In the sanity check as formulated now, this will create an integer overflow, defeating the sanity check. Both offset and offset + len need to be checked in such a manner that no overflow can occur. And those quantities should be unsigned.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
1 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
69 explicit affected versions
10 explicit affected versions
191 explicit affected versions
7 explicit affected versions
96 explicit affected versions
13 explicit affected versions
66 explicit affected versions
35 explicit affected versions
18 explicit affected versions
97 explicit affected versions
98 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
102 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
53 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
14 explicit affected versions
1 explicit affected versions
7 explicit affected versions
86 explicit affected versions
12 explicit affected versions
101 explicit affected versions
109 explicit affected versions
12 explicit affected versions
97 explicit affected versions
10 explicit affected versions
168 explicit affected versions
37 explicit affected versions
101 explicit affected versions
13 explicit affected versions
10 explicit affected versions
1 explicit affected versions
36 explicit affected versions
26 explicit affected versions
13 explicit affected versions
1 explicit affected versions
29 explicit affected versions
89 explicit affected versions
13 explicit affected versions
1 explicit affected versions
84 explicit affected versions
101 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
95 explicit affected versions
11 explicit affected versions
12 explicit affected versions
118 explicit affected versions
7 explicit affected versions
12 explicit affected versions
99 explicit affected versions
2 explicit affected versions
111 explicit affected versions
131 explicit affected versions
10 explicit affected versions
26 explicit affected versions
35 explicit affected versions
13 explicit affected versions
118 explicit affected versions
59 explicit affected versions
16 explicit affected versions
3 explicit affected versions
72 explicit affected versions
1 explicit affected versions
66 explicit affected versions
51 explicit affected versions
71 explicit affected versions
12 explicit affected versions
27 explicit affected versions
1 explicit affected versions
1 explicit affected versions
75 explicit affected versions
8 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
13 explicit affected versions
88 explicit affected versions
13 explicit affected versions
53 explicit affected versions
7 explicit affected versions
73 explicit affected versions
10 explicit affected versions
12 explicit affected versions
88 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
37 explicit affected versions
14 explicit affected versions
38 explicit affected versions
9 explicit affected versions
11 explicit affected versions
145 explicit affected versions
7 explicit affected versions
78 explicit affected versions
60 explicit affected versions
122 explicit affected versions
101 explicit affected versions
4 explicit affected versions
94 explicit affected versions
13 explicit affected versions
43 explicit affected versions
54 explicit affected versions
125 explicit affected versions
145 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
89 explicit affected versions
4 explicit affected versions
78 explicit affected versions
1 explicit affected versions
48 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: CDC-NCM: avoid overflow in sanity checking A broken device may give an extreme offset like 0xFFF0 and a reasonable length for a fragment. In the sanity check as formulated now, this will create an integer overflow, defeating the sanity check. Both offset and offset + len need to be checked in such a manner that no overflow can occur. And those quantities should be unsigned.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/8d2b1a1ec9f559d30b724877da4ce592edc41fdc
- https://git.kernel.org/stable/c/49909c9f8458cacb5b241106cba65aba5a6d8f4c
- https://git.kernel.org/stable/c/69560efa001397ebb8dc1c3e6a3ce00302bb9f7f
- https://git.kernel.org/stable/c/7b737e47b87589031f0d4657f6d7b0b770474925
- https://git.kernel.org/stable/c/8d2b1a1ec9f559d30b724877da4ce592edc41fdc
- https://ubuntu.com/security/CVE-2022-48938
- https://ubuntu.com/security/notices/USN-7121-1
- https://ubuntu.com/security/notices/USN-7121-2
- https://ubuntu.com/security/notices/USN-7121-3
- https://ubuntu.com/security/notices/USN-7148-1
- https://ubuntu.com/security/notices/USN-7159-1
- https://ubuntu.com/security/notices/USN-7159-2
- https://ubuntu.com/security/notices/USN-7159-3
- https://ubuntu.com/security/notices/USN-7159-4
- https://ubuntu.com/security/notices/USN-7159-5
- https://ubuntu.com/security/notices/USN-7195-1
- https://ubuntu.com/security/notices/USN-7195-2
- https://www.cve.org/CVERecord?id=CVE-2022-48938