UBUNTU-CVE-2020-36311
An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
4 explicit affected versions
30 explicit affected versions
4 explicit affected versions
23 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
7 explicit affected versions
1 explicit affected versions
32 explicit affected versions
40 explicit affected versions
32 explicit affected versions
10 explicit affected versions
17 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
35 explicit affected versions
33 explicit affected versions
10 explicit affected versions
11 explicit affected versions
6 explicit affected versions
33 explicit affected versions
28 explicit affected versions
1 explicit affected versions
12 explicit affected versions
1 explicit affected versions
5 explicit affected versions
22 explicit affected versions
1 explicit affected versions
23 explicit affected versions
1 explicit affected versions
10 explicit affected versions
44 explicit affected versions
16 explicit affected versions
17 explicit affected versions
38 explicit affected versions
9 explicit affected versions
23 explicit affected versions
5 explicit affected versions
4 explicit affected versions
22 explicit affected versions
43 explicit affected versions
1 explicit affected versions
12 explicit affected versions
4 explicit affected versions
12 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
05 / REFERENCES
Further evidence
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9
- https://git.kernel.org/linus/7be74942f184fdfba34ddd19a0d995deb34d4a03
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03
- https://ubuntu.com/security/CVE-2020-36311
- https://ubuntu.com/security/notices/USN-5071-1
- https://ubuntu.com/security/notices/USN-5071-2
- https://ubuntu.com/security/notices/USN-5120-1
- https://www.cve.org/CVERecord?id=CVE-2020-36311