ghsa-c5xm-9r44-7w3j
Vulnerability from github
Published
2024-10-21 15:32
Modified
2024-10-23 18:33
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:

padata: use integer wrap around to prevent deadlock on seq_nr overflow

When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next.

To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-47739"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T13:15:04Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npadata: use integer wrap around to prevent deadlock on seq_nr overflow\n\nWhen submitting more than 2^32 padata objects to padata_do_serial, the\ncurrent sorting implementation incorrectly sorts padata objects with\noverflowed seq_nr, causing them to be placed before existing objects in\nthe reorder list. This leads to a deadlock in the serialization process\nas padata_find_next cannot match padata-\u003eseq_nr and pd-\u003eprocessed\nbecause the padata instance with overflowed seq_nr will be selected\nnext.\n\nTo fix this, we use an unsigned integer wrap around to correctly sort\npadata objects in scenarios with integer overflow.",
  "id": "GHSA-c5xm-9r44-7w3j",
  "modified": "2024-10-23T18:33:07Z",
  "published": "2024-10-21T15:32:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47739"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b8cf11b3ca593a8802a51802cd0c28c38501428"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bd712de96ad7167fe0d608e706cd60587579f16"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46c4079460f4dcaf445860679558eedef4e1bc91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72164d5b648951684b1a593996b37a6083c61d7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a22b2812393d93d84358a760c347c21939029a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e279e6c1f012b82628b89e1b9c65dbefa8ca25a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab205e1c3846326f162180e56825b4ba38ce9c30"
    }
  ],
  "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"
    }
  ]
}


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