GHSA-5C72-FRQM-R8R4

Vulnerability from github – Published: 2025-05-08 09:30 – Updated: 2025-11-12 21:31
VLAI
Details

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

irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()

With ACPI in place, gicv2m_get_fwnode() is registered with the pci subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime during a PCI host bridge probe. But, the call back is wrongly marked as __init, causing it to be freed, while being registered with the PCI subsystem and could trigger:

Unable to handle kernel paging request at virtual address ffff8000816c0400 gicv2m_get_fwnode+0x0/0x58 (P) pci_set_bus_msi_domain+0x74/0x88 pci_register_host_bridge+0x194/0x548

This is easily reproducible on a Juno board with ACPI boot.

Retain the function for later use.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-37819"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-08T07:15:53Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()\n\nWith ACPI in place, gicv2m_get_fwnode() is registered with the pci\nsubsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime\nduring a PCI host bridge probe. But, the call back is wrongly marked as\n__init, causing it to be freed, while being registered with the PCI\nsubsystem and could trigger:\n\n Unable to handle kernel paging request at virtual address ffff8000816c0400\n  gicv2m_get_fwnode+0x0/0x58 (P)\n  pci_set_bus_msi_domain+0x74/0x88\n  pci_register_host_bridge+0x194/0x548\n\nThis is easily reproducible on a Juno board with ACPI boot.\n\nRetain the function for later use.",
  "id": "GHSA-5c72-frqm-r8r4",
  "modified": "2025-11-12T21:31:02Z",
  "published": "2025-05-08T09:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37819"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c241dedc43a036599757cd08f356253fa3e5014"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f2803e4b5e4df2b08d378deaab78b1681ef9b30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3318dc299b072a0511d6dfd8367f3304fb6d9827"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3939d6f29d34cdb60e3f68b76e39e00a964a1d51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47bee0081b483b077c7560bc5358ad101f89c8ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b63de43af8d215b0499eac28b2caa4439183efc1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc0d654eb4179b06d3206e4396d072108b9ba082"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f95659affee301464f0d058d528d96b35b452da8"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.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"
    }
  ]
}



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