CVE-2020-27152: linux linux_kernel Loop with Unreachable Exit Condition
Vulnerability summary
CVE-2020-27152 is a medium (CVSS 5.5) Loop with Unreachable Exit Condition vulnerability in linux linux_kernel. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 47.1% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 1Timeline
- 06-11-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.57%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.57% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugzilla.kernel.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu18 products
- linuxAll versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-azureAll versions (No fix recorded)
Debian1 product
- linux< 5.9.6-1
Linux1 product
- linux_kernel< 5.9.2
3 vendors · 20 products
References
12 links- bugzilla.kernel.org/show_bug.cgi?id=208767X Refsource MISCREPORTExploitIssue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2020/11/03/1Mailing ListX Refsource MLISTPatchThird Party Advisory
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2X Refsource CONFIRMMailing ListRelease NotesVendor Advisory
