github - ghsa-89r8-fpgw-f2hq

ghsa-89r8-fpgw-f2hq

Vulnerability from github

Published

2024-06-19 15:30

Modified

2024-11-06 21:30

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup

KASAN reports an out-of-bounds read in rk_gmac_setup on the line:

while (ops->regs[i]) {

This happens for most platforms since the regs flexible array member is empty, so the memory after the ops structure is being read here. It seems that mostly this happens to contain zero anyway, so we get lucky and everything still works.

To avoid adding redundant data to nearly all the ops structures, add a new flag to indicate whether the regs field is valid and avoid this loop when it is not.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47586"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-19T15:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: dwmac-rk: fix oob read in rk_gmac_setup\n\nKASAN reports an out-of-bounds read in rk_gmac_setup on the line:\n\n\twhile (ops-\u003eregs[i]) {\n\nThis happens for most platforms since the regs flexible array member is\nempty, so the memory after the ops structure is being read here.  It\nseems that mostly this happens to contain zero anyway, so we get lucky\nand everything still works.\n\nTo avoid adding redundant data to nearly all the ops structures, add a\nnew flag to indicate whether the regs field is valid and avoid this loop\nwhen it is not.",
  "id": "GHSA-89r8-fpgw-f2hq",
  "modified": "2024-11-06T21:30:54Z",
  "published": "2024-06-19T15:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47586"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0546b224cc7717cc8a2db076b0bb069a9c430794"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b4a5d1e15ce72f69be48f38dc0401dab890ae0f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-47586

Vulnerability from cvelistv5

Published

2024-06-19 14:53

Modified

2024-11-06 19:40

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup

References

▼	URL	Tags
	https://git.kernel.org/stable/c/0b4a5d1e15ce72f69be48f38dc0401dab890ae0f
	https://git.kernel.org/stable/c/0546b224cc7717cc8a2db076b0bb069a9c430794

Impacted products

Vendor

Product

Version

▼

Linux

Version: 3bb3d6b1c195
Version: 3bb3d6b1c195

Linux

Version: 5.14

Show details on NVD website

JSON

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              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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              "content": {
                "id": "CVE-2021-47586",
                "options": [
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-20T15:19:59.553139Z",
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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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