CVE-2025-37849

Aliases:UBUNTU-CVE-2025-37849DEBIAN-CVE-2025-37849
Advisory lineage Upstream: 0 Downstream: 68
Modified
Published: 09 May 2025, 06:41
Last modified:05 Aug 2026, 11:57

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
0.26% LOW
0% probability +0.24%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 May 2025, 06:41
Published
Vulnerability first disclosed
05 Aug 2026, 11:57
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.26%• Percentile: 18%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•linux

    all | < 6.1.135-1 | < 6.12.25-1 | < 6.12.25-1

  • debian•linux-6.1

    < 6.1.137-1~deb11u1

  • ubuntu•linux

    < 4.15.0-248.260 | < 5.4.0-228.248 | < 5.15.0-174.184 | < 6.8.0-100.100

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 4.15.0-1190.203 | < 5.4.0-1157.167 | < 5.15.0-1104.111 | < 6.8.0-1046.49

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1104.111~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1157.167~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-6.8

    < 6.8.0-1046.49~22.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2128.134 | all | < 5.4.0-1157.167+fips1 | < 5.15.0-1104.111+fips1 | < 6.8.0-1046.49+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1190.203~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1199.214~14.04.1 | < 4.15.0-1200.215~16.04.1 | all | < 5.4.0-1161.167 | < 5.15.0-1109.118 | < 6.8.0-1046.52

  • ubuntu•linux-azure-4.15

    < 4.15.0-1199.214

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1110.119~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1161.167~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-6.8

    < 6.8.0-1051.57~22.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | 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

    < 4.15.0-2109.115 | all | < 5.4.0-1161.167+fips1 | < 5.15.0-1109.118+fips1 | < 6.8.0-1046.52+fips1

  • ubuntu•linux-azure-nvidia

    all

  • ubuntu•linux-bluefield

    all | < 5.4.0-1116.123 | < 5.15.0-1087.89 | < 6.8.0-1016.20

  • ubuntu•linux-fips

    < 4.15.0-1145.157 | all | < 5.4.0-1131.141 | < 5.15.0-174.184+fips1 | < 6.8.0-100.100+fips1

  • ubuntu•linux-gcp

    < 4.15.0-1183.200~16.04.2 | all | < 5.4.0-1160.169 | < 5.15.0-1104.113 | < 6.8.0-1047.50

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1183.200

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1104.113~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1160.169~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.11

    all

Showing first 50 affected entries in server-rendered view.

References (50)