GHSA-WJRH-V4VW-2JMC

Vulnerability from github – Published: 2022-05-13 01:42 – Updated: 2025-04-20 03:45
VLAI?
Details

The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.

Severity ?
7.1 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2017-12154"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-09-26T05:29:00Z",
    "severity": "HIGH"
  },
  "details": "The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the \"CR8-load exiting\" and \"CR8-store exiting\" L0 vmcs02 controls exist in cases where L1 omits the \"use TPR shadow\" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.",
  "id": "GHSA-wjrh-v4vw-2jmc",
  "modified": "2025-04-20T03:45:53Z",
  "published": "2022-05-13T01:42:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12154"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/51aa68e7d57e3217192d88ce90fd5b8ef29ec94f"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:0676"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:1062"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1946"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2017-12154"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1491224"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3698-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3698-2"
    },
    {
      "type": "WEB",
      "url": "https://www.spinics.net/lists/kvm/msg155414.html"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51aa68e7d57e3217192d88ce90fd5b8ef29ec94f"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2017/dsa-3981"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/100856"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "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.