{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-56675",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-56675"
  ],
  "published": "2024-12-27T15:08:24Z",
  "summary": "bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors\n\nUprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU\nprotection. But it is possible to attach a non-sleepable BPF program to a\nuprobe, and non-sleepable BPF programs are freed via normal RCU (see\n__bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal\nRCU grace period does not imply a tasks-trace-RCU grace period.\n\nFix it by explicitly waiting for a tasks-trace-RCU grace period after\nremoving the attachment of a bpf_prog to a perf_event.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-56675"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d"
    },
    {
      "type": "FIX",
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    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}