CVE-2011-4622: redhat kvm
Vulnerability summary
CVE-2011-4622 is a medium (CVSS 4.9) vulnerability in redhat kvm. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 28.3% of scored vulnerabilities.
Not severe (CVSS 4.9, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3Timeline
- 27-01-2012PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.35%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.35% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Ubuntu14 products
- linux< 3.11.0-12.19 | < 4.2.0-16.19
- linux-aws< 4.4.0-1002.2 | < 4.4.0-1001.10
- linux-flo< 3.4.0-1.3 | < 3.4.0-5.22
- linux-gke< 4.4.0-1003.3
- linux-goldfish< 3.4.0-1.9 | < 3.4.0-4.27
Redhat1 product
- kvm83
2 vendors · 15 products
References
18 links- bugzilla.redhat.com/show_bug.cgi?id=769721X Refsource CONFIRM