CVE-2021-4032
MEDIUM
4.4
CVSS Score
Published: January 21, 2022 at 06:17 PM UTC
Updated: June 17, 2026 at 04:18 AM UTC
2 products affected across 2 vendorsLinux KernelKernel
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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.4%
Description
A vulnerability was found in the Linux kernel's KVM subsystem in arch/x86/kvm/lapic.c kvm_free_lapic when a failure allocation was detected. In this flaw the KVM subsystem may crash the kernel due to mishandling of memory errors that happens during VCPU construction, which allows an attacker with special user privilege to cause a denial of service. This flaw affects kernel versions prior to 5.15 rc7.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2027403x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f7d8a19f9a056a05c5c509fa65af472a322abfeex_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://lkml.org/lkml/2021/9/8/587CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-459
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