io_uring/rw: fix missing NOWAIT check for O_DIRECT start write

{
  "id": "0fbb1b392d382073778a80c63267a9f089a3d2f13ae9e956fa091f99945b88cf",
  "url": "https://osv.dev/vulnerability/CVE-2024-53052",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring/rw: fix missing NOWAIT check for O_DIRECT start write",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: fix missing NOWAIT check for O_DIRECT start write When io_uring starts a write, it'll call kiocb_start_write() to bump the super block rwsem, preventing any freezes from happening while that write is in-flight. The freeze side will grab that rwsem for writing, excluding any new writers from happening and waiting for existing writes to finish. But io_uring unconditionally uses kiocb_start_write(), which will block if someone is currently attempting to freeze the mount point. This causes a deadlock where freeze is waiting for previous writes to complete, but the previous writes cannot complete, as the task that is supposed to complete them is blocked waiting on starting a new write. This results in the following stuck trace showing that dependency with the write blocked starting a new write: task:fio state:D stack:0 pid:886 tgid:886 ppid:876 Call trace: __switch_to+0x1d8/0x348 __schedule+0x8e8/0x2248 schedule+0x110/0x3f0 percpu_rwsem_wait+0x1e8/0x3f8 __percpu_down_read+0xe8/0x500 io_write+0xbb8/0xff8 io_issue_sqe+0x10c/0x1020 io_submit_sqes+0x614/0x2110 __arm64_sys_io_uring_enter+0x524/0x1038 invoke_syscall+0x74/0x268 el0_svc_common.constprop.0+0x160/0x238 do_el0_svc+0x44/0x60 el0_svc+0x44/0xb0 el0t_64_sync_handler+0x118/0x128 el0t_64_sync+0x168/0x170 INFO: task fsfreeze:7364 blocked for more than 15 seconds. Not tainted 6.12.0-rc5-00063-g76aaf945701c #7963 with the attempting freezer stuck trying ",
    "evidence": "osv:CVE-2024-53052",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "5.10.230",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.172",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.116",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.6.60",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-53052",
      "aliases": [
        "CVE-2024-53052"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
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              "type": "GIT",
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                  "fixed": "003d2996964c03dfd34860500428f4cdf1f5879e"
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                {
                  "fixed": "26b8c48f369b7591f5679e0b90612f4862a32929"
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                  "fixed": "1d60d74e852647255bd8e76f5a22dc42531e4389"
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              "type": "ECOSYSTEM",
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53052.json"
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      ],
      "modified": "2026-10-28T02:30:39.444321281Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/003d2996964c03dfd34860500428f4cdf1f5879e",
        "https://git.kernel.org/stable/c/1d60d74e852647255bd8e76f5a22dc42531e4389",
        "https://git.kernel.org/stable/c/26b8c48f369b7591f5679e0b90612f4862a32929",
        "https://git.kernel.org/stable/c/485d9232112b17f389b29497ff41b97b3189546b",
        "https://git.kernel.org/stable/c/4e24041ba86d50aaa4c792ae2c88ed01b3d96243",
        "https://git.kernel.org/stable/c/9e8debb8e51354b201db494689198078ec2c1e75",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53052.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-53052",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53052.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2024-53052",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506912,
  "published_at": "2024-11-19T17:19:37.067+00:00"
}