UBUNTU-CVE-2023-52522
In the Linux kernel, the following vulnerability has been resolved: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().
02 / AFFECTED SOFTWARE
Affected packages
23 explicit affected versions
35 explicit affected versions
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12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
44 explicit affected versions
30 explicit affected versions
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41 explicit affected versions
30 explicit affected versions
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191 explicit affected versions
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78 explicit affected versions
13 explicit affected versions
69 explicit affected versions
35 explicit affected versions
1 explicit affected versions
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18 explicit affected versions
100 explicit affected versions
24 explicit affected versions
80 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
105 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
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12 explicit affected versions
80 explicit affected versions
104 explicit affected versions
7 explicit affected versions
10 explicit affected versions
172 explicit affected versions
37 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
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11 explicit affected versions
12 explicit affected versions
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7 explicit affected versions
12 explicit affected versions
82 explicit affected versions
2 explicit affected versions
30 explicit affected versions
22 explicit affected versions
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38 explicit affected versions
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10 explicit affected versions
26 explicit affected versions
17 explicit affected versions
1 explicit affected versions
13 explicit affected versions
121 explicit affected versions
41 explicit affected versions
16 explicit affected versions
41 explicit affected versions
31 explicit affected versions
3 explicit affected versions
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1 explicit affected versions
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74 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
79 explicit affected versions
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13 explicit affected versions
36 explicit affected versions
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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
38 explicit affected versions
8 explicit affected versions
7 explicit affected versions
12 explicit affected versions
82 explicit affected versions
42 explicit affected versions
125 explicit affected versions
104 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
36 explicit affected versions
97 explicit affected versions
13 explicit affected versions
43 explicit affected versions
37 explicit affected versions
128 explicit affected versions
149 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
51 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/25563b581ba3a1f263a00e8c9a97f5e7363be6fd
- https://ubuntu.com/security/CVE-2023-52522
- https://ubuntu.com/security/notices/USN-7332-1
- https://ubuntu.com/security/notices/USN-7332-2
- https://ubuntu.com/security/notices/USN-7332-3
- https://ubuntu.com/security/notices/USN-7342-1
- https://ubuntu.com/security/notices/USN-7344-1
- https://ubuntu.com/security/notices/USN-7344-2
- https://www.cve.org/CVERecord?id=CVE-2023-52522