Log in Start free

Vulnerability · Published Jan 21, 2022 · Assigned by redhat

CVE-2021-4032

Medium 4.4

In plain English

A medium-severity security flaw in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS NVD)4.4Medium
Exploit odds (30 days)0.4%top 66.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
n/a kernel kernel 5.15 rc7

Weakness: CWE-459

References