ghsa-m6wx-5x43-45rq
Vulnerability from github
Published
2024-04-17 12:32
Modified
2024-06-27 12:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts

This patch is against CVE-2023-6270. The description of cve is:

A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on struct net_device, and a use-after-free can be triggered by racing between the free on the struct and the access through the skbtxq global queue. This could lead to a denial of service condition or potential code execution.

In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. Which means that the dev_put(ifp) should NOT be called in the success path of skb initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into use-after-free because the net_device is freed.

This patch removed the dev_put(ifp) in the success path in aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26898"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-17T11:15:10Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: fix the potential use-after-free problem in aoecmd_cfg_pkts\n\nThis patch is against CVE-2023-6270. The description of cve is:\n\n  A flaw was found in the ATA over Ethernet (AoE) driver in the Linux\n  kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on\n  `struct net_device`, and a use-after-free can be triggered by racing\n  between the free on the struct and the access through the `skbtxq`\n  global queue. This could lead to a denial of service condition or\n  potential code execution.\n\nIn aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial\ncode is finished. But the net_device ifp will still be used in\nlater tx()-\u003edev_queue_xmit() in kthread. Which means that the\ndev_put(ifp) should NOT be called in the success path of skb\ninitial code in aoecmd_cfg_pkts(). Otherwise tx() may run into\nuse-after-free because the net_device is freed.\n\nThis patch removed the dev_put(ifp) in the success path in\naoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().",
  "id": "GHSA-m6wx-5x43-45rq",
  "modified": "2024-06-27T12:30:45Z",
  "published": "2024-04-17T12:32:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26898"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "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"
    }
  ]
}


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