CVE-2025-37849 Affecting kernel-azure package, versions <6.4.0-150600.8.40.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (9th percentile)

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  • Snyk IDSNYK-SLES156-KERNELAZURE-10366740
  • published17 Jun 2025
  • disclosed16 Jun 2025

Introduced: 16 Jun 2025

NewCVE-2025-37849  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-azure to version 6.4.0-150600.8.40.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-azure package and not the kernel-azure package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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 Base Scores

version 3.1