AUGUST 4, 2026
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Case File

CVE-2023-52639

MEDIUM · CVSS 4.7 EPSS 0.18%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-04-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.7. It affects Linux.

CVE
CVE-2023-52639
Severity
MEDIUM
CVSS
4.7
EPSS
0.18%
Linux

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)