UBUNTU-CVE-2020-25641
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
02 / AFFECTED SOFTWARE
Affected packages
49 explicit affected versions
6 explicit affected versions
6 explicit affected versions
52 explicit affected versions
15 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
8 explicit affected versions
1 explicit affected versions
15 explicit affected versions
19 explicit affected versions
15 explicit affected versions
9 explicit affected versions
10 explicit affected versions
32 explicit affected versions
1 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
17 explicit affected versions
28 explicit affected versions
10 explicit affected versions
11 explicit affected versions
15 explicit affected versions
51 explicit affected versions
7 explicit affected versions
56 explicit affected versions
1 explicit affected versions
9 explicit affected versions
64 explicit affected versions
1 explicit affected versions
11 explicit affected versions
5 explicit affected versions
1 explicit affected versions
5 explicit affected versions
1 explicit affected versions
9 explicit affected versions
5 explicit affected versions
33 explicit affected versions
44 explicit affected versions
16 explicit affected versions
1 explicit affected versions
38 explicit affected versions
9 explicit affected versions
5 explicit affected versions
79 explicit affected versions
41 explicit affected versions
2 explicit affected versions
5 explicit affected versions
43 explicit affected versions
1 explicit affected versions
12 explicit affected versions
9 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 Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/7e24969022cbd61ddc586f14824fc205661bb124
- https://ubuntu.com/security/CVE-2020-25641
- https://ubuntu.com/security/notices/USN-4576-1
- https://ubuntu.com/security/notices/USN-4660-1
- https://ubuntu.com/security/notices/USN-4752-1
- https://www.cve.org/CVERecord?id=CVE-2020-25641