ghsa-x6h6-973g-q656
Vulnerability from github
Published
2024-10-21 15:32
Modified
2024-10-22 18:32
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

nbd: fix race between timeout and normal completion

If request timetout is handled by nbd_requeue_cmd(), normal completion has to be stopped for avoiding to complete this requeued request, other use-after-free can be triggered.

Fix the race by clearing NBD_CMD_INFLIGHT in nbd_requeue_cmd(), meantime make sure that cmd->lock is grabbed for clearing the flag and the requeue.

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{
   affected: [],
   aliases: [
      "CVE-2024-49855",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-416",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-10-21T13:15:06Z",
      severity: "HIGH",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: fix race between timeout and normal completion\n\nIf request timetout is handled by nbd_requeue_cmd(), normal completion\nhas to be stopped for avoiding to complete this requeued request, other\nuse-after-free can be triggered.\n\nFix the race by clearing NBD_CMD_INFLIGHT in nbd_requeue_cmd(), meantime\nmake sure that cmd->lock is grabbed for clearing the flag and the\nrequeue.",
   id: "GHSA-x6h6-973g-q656",
   modified: "2024-10-22T18:32:10Z",
   published: "2024-10-21T15:32:27Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-49855",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/5236ada8ebbd9e7461f17477357582f5be4f46f7",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/6e73b946a379a1dfbb62626af93843bdfb53753d",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/9a74c3e6c0d686c26ba2aab66d15ddb89dc139cc",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/9c25faf72d780a9c71081710cd48759d61ff6e9b",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/c9ea57c91f03bcad415e1a20113bdb2077bcf990",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
}


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