ghsa-w9f5-vpqq-grqj
Vulnerability from github
Published
2025-01-19 12:31
Modified
2025-02-02 12:30
Details

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

netfilter: conntrack: clamp maximum hashtable size to INT_MAX

Use INT_MAX as maximum size for the conntrack hashtable. Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. See:

0708a0afe291 ("mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls")

Note: hashtable resize is only possible from init_netns.

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{
   affected: [],
   aliases: [
      "CVE-2025-21648",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2025-01-19T11:15:10Z",
      severity: null,
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: clamp maximum hashtable size to INT_MAX\n\nUse INT_MAX as maximum size for the conntrack hashtable. Otherwise, it\nis possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when\nresizing hashtable because __GFP_NOWARN is unset. See:\n\n  0708a0afe291 (\"mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls\")\n\nNote: hashtable resize is only possible from init_netns.",
   id: "GHSA-w9f5-vpqq-grqj",
   modified: "2025-02-02T12:30:24Z",
   published: "2025-01-19T12:31:25Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2025-21648",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/5552b4fd44be3393b930434a7845d8d95a2a3c33",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/a965f7f0ea3ae61b9165bed619d5d6da02c75f80",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b1b2353d768f1b80cd7fe045a70adee576b9b338",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/d5807dd1328bbc86e059c5de80d1bbee9d58ca3d",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/f559357d035877b9d0dcd273e0ff83e18e1d46aa",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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