github - ghsa-r8pm-459q-x6hw

ghsa-r8pm-459q-x6hw

Vulnerability from github

Published

2023-09-06 15:30

Modified

2024-01-11 21:31

Severity ?

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

Details

A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation.

When route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.

We recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2023-4206"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-09-06T14:15:11Z",
    "severity": "HIGH"
  },
  "details": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: cls_route component can be exploited to achieve local privilege escalation.\n\nWhen route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.\n\nWe recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.\n\n",
  "id": "GHSA-r8pm-459q-x6hw",
  "modified": "2024-01-11T21:31:15Z",
  "published": "2023-09-06T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4206"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8"
    },
    {
      "type": "WEB",
      "url": "https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5492"
    }
  ],
  "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"
    }
  ]
}

cve-2023-4206

Vulnerability from cvelistv5

Published

2023-09-06 13:53

Modified

2024-08-02 07:17

Severity ?

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

Summary

Use-after-free in Linux kernel's net/sched: cls_route component

References

▼	URL	Tags
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8	patch
	https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8
	https://www.debian.org/security/2023/dsa-5492
	https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html

Impacted products

▼	Vendor	Product
	Linux	Kernel

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-02T07:17:12.232Z",
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          },
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            "tags": [
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            "url": "https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8"
          },
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            "url": "https://www.debian.org/security/2023/dsa-5492"
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            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
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        ],
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          "repo": "https://git.kernel.org",
          "vendor": "Linux",
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      "credits": [
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          "value": "valis"
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          "value": "Bing-Jhong Billy Jheng"
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      "impacts": [
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      "metrics": [
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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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