Riskcovery

CVE-2023-52639

KVM: s390: vsie: fix race during shadow creation

State
Published
Severity
Not scored
Published
Apr 3, 2024
Updated
May 11, 2026
Reserved
Mar 6, 2024

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a3508fbe9dc6dd3bece0c7bf889cc085a011738c to before 5df3b81a567eb565029563f26f374ae3803a1dfcAffected
  • a3508fbe9dc6dd3bece0c7bf889cc085a011738c to before f5572c0323cf8b4f1f0618178648a25b8fb8a380Affected
  • a3508fbe9dc6dd3bece0c7bf889cc085a011738c to before 28bb27824f25f36e5f80229a358d66ee09244082Affected
  • a3508fbe9dc6dd3bece0c7bf889cc085a011738c to before fe752331d4b361d43cfd0b89534b4b2176057c32Affected
LinuxLinux
  • 4.8Affected
  • before 4.8Not affected
  • 6.1.82 through 6.1.*Not affected
  • 6.6.22 through 6.6.*Not affected
  • 6.7.6 through 6.7.*Not affected
  • 6.8 and laterNot affected

References

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