github - ghsa-cx75-fvjc-vvr8

ghsa-cx75-fvjc-vvr8

Vulnerability from github

Published

2024-09-18 09:30

Modified

2024-11-20 21:30

Severity ?

3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

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

x86/tdx: Fix data leak in mmio_read()

The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM.

Sean noticed that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the VMM.

This variable is only needed as an output value. It did not need to be passed to the VMM in the first place.

Do not send the original value of *val to the VMM.

[ dhansen: clarify what 'val' is used for. ]

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46794"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-18T08:15:06Z",
    "severity": "LOW"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/tdx: Fix data leak in mmio_read()\n\nThe mmio_read() function makes a TDVMCALL to retrieve MMIO data for an\naddress from the VMM.\n\nSean noticed that mmio_read() unintentionally exposes the value of an\ninitialized variable (val) on the stack to the VMM.\n\nThis variable is only needed as an output value. It did not need to be\npassed to the VMM in the first place.\n\nDo not send the original value of *val to the VMM.\n\n[ dhansen: clarify what \u0027val\u0027 is used for. ]",
  "id": "GHSA-cx75-fvjc-vvr8",
  "modified": "2024-11-20T21:30:48Z",
  "published": "2024-09-18T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46794"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-46794

Vulnerability from cvelistv5

Published

2024-09-18 07:12

Modified

2024-11-05 09:46

Severity ?

Summary

x86/tdx: Fix data leak in mmio_read()

References

▼	URL	Tags
	https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7
	https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7
	https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa
	https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2024-46794",
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                  },
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T14:23:09.419294Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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