An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering, aka CID-77377064c3a9.
http://www.openwall.com/lists/oss-security/2020/11/03/1
https://bugzilla.kernel.org/show_bug.cgi?id=208767
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2
Source: MITRE
Published: 2020-11-06
Updated: 2020-11-16
Type: CWE-835
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM