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CVE-2021-4032

UNKNOWN
Published 2022-01-21T18:17:29
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-89wc-v8x9-wrv5

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-4032
WEB https://bugzilla.redhat.com/show_bug.cgi?id=2027403
WEB https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f7d8a19f9a056a05c5c509fa65af472a322abfee
WEB https://lkml.org/lkml/2021/9/8/587

Advisory provided by GitHub Security Advisory Database. Published: January 22, 2022, Modified: January 29, 2022

References

https://bugzilla.redhat.com/show_bug.cgi?id=2027403
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f7d8a19f9a056a05c5c509fa65af472a322abfee
https://lkml.org/lkml/2021/9/8/587
Published: 2022-01-21T18:17:29
Last Modified: 2024-08-03T17:16:03.043Z
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