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CVE-2020-27152

Good to know:

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Date: November 6, 2020

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.

Language: C

Severity Score

Related Resources (9)

https://nvd.nist.gov/vuln/detail/CVE-2020-27152
http://www.openwall.com/lists/oss-security/2020/11/03/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-27152
https://security-tracker.debian.org/tracker/CVE-2020-27152
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2
https://bugzilla.kernel.org/show_bug.cgi?id=208767
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77377064c3a94911339f13ce113b3abf265e06da
https://access.redhat.com/security/cve/CVE-2020-27152
https://www.mend.io/vulnerability-database/CVE-2020-27152

Severity Score

Weakness Type (CWE)

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-835

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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