ghsa-wr4f-chxr-9pr5
Vulnerability from github
Published
2024-11-08 06:30
Modified
2024-11-29 21:31
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

irqchip/gic-v4: Don't allow a VMOVP on a dying VPE

Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/.

Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case.

This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-50192"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-08T06:15:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v4: Don\u0027t allow a VMOVP on a dying VPE\n\nKunkun Jiang reported that there is a small window of opportunity for\nuserspace to force a change of affinity for a VPE while the VPE has already\nbeen unmapped, but the corresponding doorbell interrupt still visible in\n/proc/irq/.\n\nPlug the race by checking the value of vmapp_count, which tracks whether\nthe VPE is mapped ot not, and returning an error in this case.\n\nThis involves making vmapp_count common to both GICv4.1 and its v4.0\nancestor.",
  "id": "GHSA-wr4f-chxr-9pr5",
  "modified": "2024-11-29T21:31:01Z",
  "published": "2024-11-08T06:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50192"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01282ab5182f85e42234df2ff42f0ce790f465ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1442ee0011983f0c5c4b92380e6853afb513841a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64b12b061c5488e2d69e67c4eaae5da64fd30bfe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/755b9532c885b8761fb135fedcd705e21e61cccb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7d7b7fc876f836f40bf48a87e07ea18756ba196"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d960505a869e66184fff97fb334980a5b797c7c6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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