CVE-2025-37849 (GCVE-0-2025-37849)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:41 – Updated: 2026-08-05 11:57
VLAI
Title
KVM: arm64: Tear down vGIC on failed vCPU creation
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 07476e0d932afc53c05468076393ac35d0b4999e (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 5085e02362b9948f82fceca979b8f8e12acb1cc5 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < c322789613407647a05ff5c451a7bf545fb34e73 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 2480326eba8ae9ccc5e4c3c2dc8d407db68e3c52 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < f1e9087abaeedec9bf2894a282ee4f0d8383f299 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 250f25367b58d8c65a1b060a2dda037eea09a672 (git)
Create a notification for this product.
Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 6.1.135 , ≤ 6.1.* (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.24 , ≤ 6.12.* (semver)
Unaffected: 6.13.12 , ≤ 6.13.* (semver)
Unaffected: 6.14.3 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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    "redhat_vex": {
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      "current_release_date": "2026-07-30T09:28:32+00:00",
      "cve": "CVE-2025-37849",
      "id": "CVE-2025-37849",
      "initial_release_date": "2025-05-09T00:00:00+00:00",
      "product_status:fixed": "1868",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: KVM: arm64: Tear down vGIC on failed vCPU creation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-37849.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-31T01:15:30Z",
      "cve": "CVE-2025-37849",
      "id": "CVE-2025-37849",
      "initial_release_date": "2025-05-10T02:53:01Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "506",
      "product_status:known_not_affected": "196",
      "product_status:recommended": "591",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-37849",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-37849.json",
      "version": "61"
    }
  }
}



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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.