UBUNTU-CVE-2020-25643
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
02 / AFFECTED SOFTWARE
Affected packages
86 explicit affected versions
49 explicit affected versions
6 explicit affected versions
6 explicit affected versions
191 explicit affected versions
52 explicit affected versions
16 explicit affected versions
33 explicit affected versions
6 explicit affected versions
61 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
7 explicit affected versions
9 explicit affected versions
1 explicit affected versions
17 explicit affected versions
23 explicit affected versions
54 explicit affected versions
16 explicit affected versions
9 explicit affected versions
10 explicit affected versions
32 explicit affected versions
3 explicit affected versions
53 explicit affected versions
31 explicit affected versions
1 explicit affected versions
1 explicit affected versions
22 explicit affected versions
13 explicit affected versions
48 explicit affected versions
1 explicit affected versions
19 explicit affected versions
28 explicit affected versions
10 explicit affected versions
11 explicit affected versions
88 explicit affected versions
17 explicit affected versions
2 explicit affected versions
51 explicit affected versions
11 explicit affected versions
56 explicit affected versions
1 explicit affected versions
118 explicit affected versions
9 explicit affected versions
64 explicit affected versions
1 explicit affected versions
11 explicit affected versions
7 explicit affected versions
1 explicit affected versions
7 explicit affected versions
1 explicit affected versions
9 explicit affected versions
75 explicit affected versions
7 explicit affected versions
33 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
38 explicit affected versions
9 explicit affected versions
96 explicit affected versions
7 explicit affected versions
79 explicit affected versions
31 explicit affected versions
41 explicit affected versions
2 explicit affected versions
6 explicit affected versions
43 explicit affected versions
1 explicit affected versions
12 explicit affected versions
11 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/66d42ed8b25b64eb63111a2b8582c5afc8bf1105
- https://ubuntu.com/security/CVE-2020-25643
- https://ubuntu.com/security/notices/USN-4657-1
- https://ubuntu.com/security/notices/USN-4658-1
- https://ubuntu.com/security/notices/USN-4660-1
- https://ubuntu.com/security/notices/USN-4752-1
- https://www.cve.org/CVERecord?id=CVE-2020-25643