CVE-2023-52639

Aliases:UBUNTU-CVE-2023-52639DEBIAN-CVE-2023-52639
Advisory lineage Upstream: 0 Downstream: 28
Analyzed
Published: 03 Apr 2024, 14:54
Last modified:11 May 2026, 19:30

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.18% LOW
0% probability +0.16%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Apr 2024, 14:54
Published
Vulnerability first disclosed
11 May 2026, 19:30
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.18%• Percentile: 7%

Techniques & Countermeasures

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

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • debian•linux

    all | < 6.1.82-1 | < 6.7.7-1 | < 6.7.7-1

  • ubuntu•linux

    < 4.15.0-231.243 | < 5.4.0-202.222 | < 5.15.0-127.137

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 4.15.0-1175.188 | < 5.4.0-1136.146 | < 5.15.0-1073.79

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1073.79~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1136.146~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2113.119 | all | < 5.4.0-1136.146+fips1 | < 5.15.0-1073.79+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1175.188~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1183.198~14.04.1 | < 4.15.0-1183.198~16.04.1 | all | < 5.4.0-1142.149 | < 5.15.0-1078.87

  • ubuntu•linux-azure-4.15

    < 4.15.0-1183.198

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1078.87~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1142.149~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | all | all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fde-6.8

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2092.98 | all | < 5.4.0-1142.149+fips1 | < 5.15.0-1078.87+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1096.103 | < 5.15.0-1057.59

  • ubuntu•linux-fips

    < 4.15.0-1129.140 | all | < 5.4.0-1110.120 | < 5.15.0-127.137+fips1

  • ubuntu•linux-gcp

    < 4.15.0-1168.185~16.04.1 | all | < 5.4.0-1140.149 | < 5.15.0-1072.80

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1168.185

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1072.80~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1140.149~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-6.5

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2076.81 | all | < 5.4.0-1140.149+fips1 | < 5.15.0-1072.80+fips1

  • ubuntu•linux-gke

    all | < 5.15.0-1070.76

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.15

    all

Showing first 50 affected entries in server-rendered view.

References (25)