raid10: cleanup memleak at raid10_make_request

{
  "id": "1152c034bdf7675e94e78af10030d9db8cf4e945aa0bbb5541100db4e2585071",
  "url": "https://osv.dev/vulnerability/CVE-2025-38444",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "raid10: cleanup memleak at raid10_make_request",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: raid10: cleanup memleak at raid10_make_request If raid10_read_request or raid10_write_request registers a new request and the REQ_NOWAIT flag is set, the code does not free the malloc from the mempool. unreferenced object 0xffff8884802c3200 (size 192): comm \"fio\", pid 9197, jiffies 4298078271 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 88 41 02 00 00 00 00 00 .........A...... 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc c1a049a2): __kmalloc+0x2bb/0x450 mempool_alloc+0x11b/0x320 raid10_make_request+0x19e/0x650 [raid10] md_handle_request+0x3b3/0x9e0 __submit_bio+0x394/0x560 __submit_bio_noacct+0x145/0x530 submit_bio_noacct_nocheck+0x682/0x830 __blkdev_direct_IO_async+0x4dc/0x6b0 blkdev_read_iter+0x1e5/0x3b0 __io_read+0x230/0x1110 io_read+0x13/0x30 io_issue_sqe+0x134/0x1180 io_submit_sqes+0x48c/0xe90 __do_sys_io_uring_enter+0x574/0x8b0 do_syscall_64+0x5c/0xe0 entry_SYSCALL_64_after_hwframe+0x76/0x7e V4: changing backing tree to see if CKI tests will pass. The patch code has not changed between any versions.",
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      "modified": "2026-10-28T02:30:44.702090878Z",
      "provider": "osv",
      "references": [
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        "https://git.kernel.org/stable/c/9af149ca9d0dab6e59e813519d309eff62499864",
        "https://git.kernel.org/stable/c/ed7bcd9f617e4107ac0813c516e72e6b8f6029bd",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38444.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38444",
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  "source_id": "core-osv",
  "document_id": 512557,
  "published_at": "2025-07-25T15:27:27.336+00:00"
}