{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46315",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-46315"
  ],
  "published": "2026-06-09T07:41:46Z",
  "summary": "io_uring/waitid: clear waitid info before copying it to userspace",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/waitid: clear waitid info before copying it to userspace\n\nIORING_OP_WAITID stores its result fields in struct io_waitid::info and\nlater copies them to userspace siginfo. The prep path initializes the\nrequest arguments, but it does not initialize info itself.\n\nIf the wait operation completes without reporting a child event, the common\nwait code can return without writing wo_info. In that case io_waitid_finish()\nstill copies iw->info to userspace, exposing stale bytes from the reused\nio_kiocb command storage.\n\nClear the result storage during prep so the io_uring path matches the\nregular waitid syscall, which uses a zero-initialized struct waitid_info.",
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      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46315"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-15T02:03:26Z"
  }
}