Description
In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Handle SRCU initialization failure during page track init

Check the return of init_srcu_struct(), which can fail due to OOM, when
initializing the page track mechanism. Lack of checking leads to a NULL
pointer deref found by a modified syzkaller.

[Move the call towards the beginning of kvm_arch_init_vm. - Paolo]
Published: 2024-05-21
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 09 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-11T13:54:07.782Z

Reserved: 2024-05-21T14:58:30.817Z

Link: CVE-2021-47407

cve-icon Vulnrichment

Updated: 2024-08-04T05:39:58.900Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-21T15:15:26.247

Modified: 2024-11-21T06:36:04.980

Link: CVE-2021-47407

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47407 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:10:02Z

Weaknesses