UBUNTU-CVE-2021-3753
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
5 explicit affected versions
6 explicit affected versions
7 explicit affected versions
191 explicit affected versions
50 explicit affected versions
72 explicit affected versions
33 explicit affected versions
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25 explicit affected versions
84 explicit affected versions
4 explicit affected versions
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1 explicit affected versions
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21 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
5 explicit affected versions
1 explicit affected versions
7 explicit affected versions
4 explicit affected versions
36 explicit affected versions
44 explicit affected versions
5 explicit affected versions
36 explicit affected versions
27 explicit affected versions
10 explicit affected versions
152 explicit affected versions
20 explicit affected versions
85 explicit affected versions
50 explicit affected versions
1 explicit affected versions
20 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
66 explicit affected versions
1 explicit affected versions
38 explicit affected versions
33 explicit affected versions
10 explicit affected versions
51 explicit affected versions
11 explicit affected versions
6 explicit affected versions
74 explicit affected versions
7 explicit affected versions
36 explicit affected versions
2 explicit affected versions
70 explicit affected versions
32 explicit affected versions
1 explicit affected versions
4 explicit affected versions
15 explicit affected versions
28 explicit affected versions
1 explicit affected versions
1 explicit affected versions
32 explicit affected versions
5 explicit affected versions
26 explicit affected versions
1 explicit affected versions
26 explicit affected versions
6 explicit affected versions
1 explicit affected versions
28 explicit affected versions
10 explicit affected versions
24 explicit affected versions
44 explicit affected versions
16 explicit affected versions
4 explicit affected versions
20 explicit affected versions
38 explicit affected versions
9 explicit affected versions
129 explicit affected versions
26 explicit affected versions
63 explicit affected versions
7 explicit affected versions
82 explicit affected versions
59 explicit affected versions
4 explicit affected versions
16 explicit affected versions
50 explicit affected versions
26 explicit affected versions
43 explicit affected versions
1 explicit affected versions
108 explicit affected versions
99 explicit affected versions
12 explicit affected versions
28 explicit affected versions
4 explicit affected versions
15 explicit affected versions
1 explicit affected versions
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/2287a51ba822384834dafc1c798453375d1107c7
- https://ubuntu.com/security/CVE-2021-3753
- https://ubuntu.com/security/notices/USN-5113-1
- https://ubuntu.com/security/notices/USN-5115-1
- https://ubuntu.com/security/notices/USN-5117-1
- https://ubuntu.com/security/notices/USN-5136-1
- https://ubuntu.com/security/notices/USN-5137-1
- https://ubuntu.com/security/notices/USN-5137-2
- https://ubuntu.com/security/notices/USN-6221-1
- https://www.cve.org/CVERecord?id=CVE-2021-3753
- https://www.openwall.com/lists/oss-security/2021/09/01/4