UBUNTU-CVE-2021-3752
A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
191 explicit affected versions
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
57 explicit affected versions
75 explicit affected versions
37 explicit affected versions
55 explicit affected versions
28 explicit affected versions
6 explicit affected versions
87 explicit affected versions
2 explicit affected versions
4 explicit affected versions
23 explicit affected versions
75 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
5 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
11 explicit affected versions
1 explicit affected versions
7 explicit affected versions
11 explicit affected versions
41 explicit affected versions
2 explicit affected versions
49 explicit affected versions
11 explicit affected versions
40 explicit affected versions
30 explicit affected versions
10 explicit affected versions
141 explicit affected versions
24 explicit affected versions
74 explicit affected versions
53 explicit affected versions
1 explicit affected versions
23 explicit affected versions
2 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
69 explicit affected versions
1 explicit affected versions
42 explicit affected versions
33 explicit affected versions
10 explicit affected versions
54 explicit affected versions
11 explicit affected versions
12 explicit affected versions
77 explicit affected versions
7 explicit affected versions
40 explicit affected versions
2 explicit affected versions
73 explicit affected versions
37 explicit affected versions
1 explicit affected versions
8 explicit affected versions
19 explicit affected versions
32 explicit affected versions
2 explicit affected versions
1 explicit affected versions
1 explicit affected versions
35 explicit affected versions
5 explicit affected versions
31 explicit affected versions
1 explicit affected versions
30 explicit affected versions
1 explicit affected versions
31 explicit affected versions
10 explicit affected versions
2 explicit affected versions
28 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
24 explicit affected versions
38 explicit affected versions
9 explicit affected versions
118 explicit affected versions
30 explicit affected versions
53 explicit affected versions
85 explicit affected versions
62 explicit affected versions
4 explicit affected versions
19 explicit affected versions
53 explicit affected versions
30 explicit affected versions
43 explicit affected versions
1 explicit affected versions
96 explicit affected versions
102 explicit affected versions
12 explicit affected versions
32 explicit affected versions
4 explicit affected versions
19 explicit affected versions
1 explicit affected versions
9 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
05 / REFERENCES
Further evidence
- https://ubuntu.com/security/CVE-2021-3752
- https://ubuntu.com/security/notices/USN-5265-1
- https://ubuntu.com/security/notices/USN-5267-1
- https://ubuntu.com/security/notices/USN-5267-3
- https://ubuntu.com/security/notices/USN-5268-1
- https://ubuntu.com/security/notices/USN-5505-1
- https://ubuntu.com/security/notices/USN-5513-1
- https://www.cve.org/CVERecord?id=CVE-2021-3752
- https://www.openwall.com/lists/oss-security/2021/09/15/4