GHSA-4WFV-X2VF-68J5

Vulnerability from github – Published: 2025-05-09 09:33 – Updated: 2025-11-17 15:30
VLAI?
Details

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 ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-37849"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-09T07:16:05Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Tear down vGIC on failed vCPU creation\n\nIf kvm_arch_vcpu_create() fails to share the vCPU page with the\nhypervisor, we propagate the error back to the ioctl but leave the\nvGIC vCPU data initialised. Note only does this leak the corresponding\nmemory when the vCPU is destroyed but it can also lead to use-after-free\nif the redistributor device handling tries to walk into the vCPU.\n\nAdd the missing cleanup to kvm_arch_vcpu_create(), ensuring that the\nvGIC vCPU structures are destroyed on error.",
  "id": "GHSA-4wfv-x2vf-68j5",
  "modified": "2025-11-17T15:30:30Z",
  "published": "2025-05-09T09:33:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37849"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07476e0d932afc53c05468076393ac35d0b4999e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2480326eba8ae9ccc5e4c3c2dc8d407db68e3c52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/250f25367b58d8c65a1b060a2dda037eea09a672"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5085e02362b9948f82fceca979b8f8e12acb1cc5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c322789613407647a05ff5c451a7bf545fb34e73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1e9087abaeedec9bf2894a282ee4f0d8383f299"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • 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.