GHSA-F8JX-PMVG-JGFH

Vulnerability from github – Published: 2024-03-03 00:30 – Updated: 2024-11-06 21:30
VLAI?
Details

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

net: fix possible store tearing in neigh_periodic_work()

While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list.

Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing.

I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-52522"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-02T22:15:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix possible store tearing in neigh_periodic_work()\n\nWhile looking at a related syzbot report involving neigh_periodic_work(),\nI found that I forgot to add an annotation when deleting an\nRCU protected item from a list.\n\nReaders use rcu_deference(*np), we need to use either\nrcu_assign_pointer() or WRITE_ONCE() on writer side\nto prevent store tearing.\n\nI use rcu_assign_pointer() to have lockdep support,\nthis was the choice made in neigh_flush_dev().",
  "id": "GHSA-f8jx-pmvg-jgfh",
  "modified": "2024-11-06T21:30:53Z",
  "published": "2024-03-03T00:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52522"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580"
    }
  ],
  "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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