UBUNTU-CVE-2023-52502
In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.
02 / AFFECTED SOFTWARE
Affected packages
23 explicit affected versions
35 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
44 explicit affected versions
30 explicit affected versions
52 explicit affected versions
41 explicit affected versions
30 explicit affected versions
37 explicit affected versions
191 explicit affected versions
7 explicit affected versions
38 explicit affected versions
78 explicit affected versions
13 explicit affected versions
66 explicit affected versions
35 explicit affected versions
1 explicit affected versions
12 explicit affected versions
18 explicit affected versions
97 explicit affected versions
24 explicit affected versions
80 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
9 explicit affected versions
16 explicit affected versions
10 explicit affected versions
35 explicit affected versions
7 explicit affected versions
12 explicit affected versions
28 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
69 explicit affected versions
12 explicit affected versions
83 explicit affected versions
91 explicit affected versions
12 explicit affected versions
80 explicit affected versions
7 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
17 explicit affected versions
1 explicit affected versions
21 explicit affected versions
26 explicit affected versions
13 explicit affected versions
3 explicit affected versions
1 explicit affected versions
29 explicit affected versions
72 explicit affected versions
13 explicit affected versions
41 explicit affected versions
1 explicit affected versions
67 explicit affected versions
40 explicit affected versions
83 explicit affected versions
2 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
82 explicit affected versions
2 explicit affected versions
30 explicit affected versions
22 explicit affected versions
111 explicit affected versions
38 explicit affected versions
131 explicit affected versions
10 explicit affected versions
26 explicit affected versions
17 explicit affected versions
1 explicit affected versions
13 explicit affected versions
118 explicit affected versions
41 explicit affected versions
16 explicit affected versions
41 explicit affected versions
31 explicit affected versions
3 explicit affected versions
72 explicit affected versions
1 explicit affected versions
2 explicit affected versions
48 explicit affected versions
51 explicit affected versions
71 explicit affected versions
12 explicit affected versions
27 explicit affected versions
27 explicit affected versions
14 explicit affected versions
1 explicit affected versions
1 explicit affected versions
75 explicit affected versions
8 explicit affected versions
2 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
13 explicit affected versions
71 explicit affected versions
13 explicit affected versions
36 explicit affected versions
7 explicit affected versions
73 explicit affected versions
33 explicit affected versions
10 explicit affected versions
10 explicit affected versions
12 explicit affected versions
70 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
27 explicit affected versions
37 explicit affected versions
14 explicit affected versions
38 explicit affected versions
31 explicit affected versions
9 explicit affected versions
31 explicit affected versions
11 explicit affected versions
145 explicit affected versions
38 explicit affected versions
8 explicit affected versions
7 explicit affected versions
12 explicit affected versions
78 explicit affected versions
42 explicit affected versions
122 explicit affected versions
101 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
36 explicit affected versions
94 explicit affected versions
13 explicit affected versions
43 explicit affected versions
37 explicit affected versions
125 explicit affected versions
145 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
71 explicit affected versions
4 explicit affected versions
60 explicit affected versions
3 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: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/31c07dffafce914c1d1543c135382a11ff058d93
- https://ubuntu.com/security/CVE-2023-52502
- 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://www.cve.org/CVERecord?id=CVE-2023-52502