Vulnerability-Lookup

GHSA-V44P-G5J5-R658

Vulnerability from github – Published: 2024-05-17 15:31 – Updated: 2024-07-03 18:42

Details

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

iommu/vt-d: Use device rbtree in iopf reporting path

The existing I/O page fault handler currently locates the PCI device by calling pci_get_domain_bus_and_slot(). This function searches the list of all PCI devices until the desired device is found. To improve lookup efficiency, replace it with device_rbtree_find() to search the device within the probed device rbtree.

The I/O page fault is initiated by the device, which does not have any synchronization mechanism with the software to ensure that the device stays in the probed device tree. Theoretically, a device could be released by the IOMMU subsystem after device_rbtree_find() and before iopf_get_dev_fault_param(), which would cause a use-after-free problem.

Add a mutex to synchronize the I/O page fault reporting path and the IOMMU release device path. This lock doesn't introduce any performance overhead, as the conflict between I/O page fault reporting and device releasing is very rare.

Severity ?

6.8 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-35843"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-17T15:15:21Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Use device rbtree in iopf reporting path\n\nThe existing I/O page fault handler currently locates the PCI device by\ncalling pci_get_domain_bus_and_slot(). This function searches the list\nof all PCI devices until the desired device is found. To improve lookup\nefficiency, replace it with device_rbtree_find() to search the device\nwithin the probed device rbtree.\n\nThe I/O page fault is initiated by the device, which does not have any\nsynchronization mechanism with the software to ensure that the device\nstays in the probed device tree. Theoretically, a device could be released\nby the IOMMU subsystem after device_rbtree_find() and before\niopf_get_dev_fault_param(), which would cause a use-after-free problem.\n\nAdd a mutex to synchronize the I/O page fault reporting path and the IOMMU\nrelease device path. This lock doesn\u0027t introduce any performance overhead,\nas the conflict between I/O page fault reporting and device releasing is\nvery rare.",
  "id": "GHSA-v44p-g5j5-r658",
  "modified": "2024-07-03T18:42:25Z",
  "published": "2024-05-17T15:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35843"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d39238991e745c5df85785604f037f35d9d1b15"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/def054b01a867822254e1dda13d587f5c7a99e2a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-35843 (GCVE-0-2024-35843)

Vulnerability from cvelistv5 – Published: 2024-05-17 14:40 – Updated: 2026-01-05 10:35

Title

iommu/vt-d: Use device rbtree in iopf reporting path

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Use device rbtree in iopf reporting path The existing I/O page fault handler currently locates the PCI device by calling pci_get_domain_bus_and_slot(). This function searches the list of all PCI devices until the desired device is found. To improve lookup efficiency, replace it with device_rbtree_find() to search the device within the probed device rbtree. The I/O page fault is initiated by the device, which does not have any synchronization mechanism with the software to ensure that the device stays in the probed device tree. Theoretically, a device could be released by the IOMMU subsystem after device_rbtree_find() and before iopf_get_dev_fault_param(), which would cause a use-after-free problem. Add a mutex to synchronize the I/O page fault reporting path and the IOMMU release device path. This lock doesn't introduce any performance overhead, as the conflict between I/O page fault reporting and device releasing is very rare.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CWE

CWE-416 - Use After Free

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3d39238991e745c5d…
	https://git.kernel.org/stable/c/def054b01a8678222…

Impacted products

Vendor

Product

Version

Linux

Affected: 06f4b8d09dbabec631ed7b033f5d5413d86c7134 , < 3d39238991e745c5df85785604f037f35d9d1b15 (git)
Affected: 06f4b8d09dbabec631ed7b033f5d5413d86c7134 , < def054b01a867822254e1dda13d587f5c7a99e2a (git)

Linux

Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)

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        "metrics": [
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    "cna": {
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        }
      ],
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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.

Action not permitted

GHSA-V44P-G5J5-R658

CVE-2024-35843 (GCVE-0-2024-35843)

Tags

Sightings

Nomenclature