CVE-2020-27152

MEDIUM5.5

An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic

Published Nov 6, 2020

Modified 1 years ago

Details

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.

References

WEBhttp://www.openwall.com/lists/oss-security/2020/11/03/1 WEBhttps://bugzilla.kernel.org/show_bug.cgi?id=208767 WEBhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2 WEBhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77377064c3a94911339f13ce113b3abf265e06da ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2020-27152

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

5.5/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Ecosystems

Timeline

PublishedNov 6, 2020

ModifiedAug 4, 2024