CVE-2023-52639

Severity CVSS v4.0:

Pending analysis

Type:

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Publication date:

03/04/2024

Last modified:

17/03/2025

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

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

4.70

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.8 (including)	6.1.82 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.22 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.7.6 (excluding)
cpe:2.3:o:linux:linux_kernel:6.8:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.8:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.8:rc3::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-52639

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools