CVE-2023-52639 - CVE House

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Status published Unknown CVE-2023-52639

KVM: s390: vsie: fix race during shadow creation

0 CVSS

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from Linux

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drm/panthor: Recover from panthor_gpu_flush_caches() failures

PCI: endpoint: Add missing NULL check for alloc_workqueue()

fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super()

fs/ntfs3: Initialize new folios before use

Affected Vendor

Linux

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Affected Software

Linux

Vulnerable Versions:

a3508fbe9dc6dd3bece0c7bf889cc085a011738c, 4.8, 0, 6.1.82, 6.6.22, 6.7.6, 6.8

Timeline

Official Publish: April 3rd, 2024

Last Modified: May 11th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.