ocfs2: fix recursive semaphore deadlock in fiemap call

{
  "id": "fbf4405f216104105deedaebeb0a767d45036d40bdccd7a906a7c52801134fcf",
  "url": "https://osv.dev/vulnerability/CVE-2025-39885",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ocfs2: fix recursive semaphore deadlock in fiemap call",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix recursive semaphore deadlock in fiemap call syzbot detected a OCFS2 hang due to a recursive semaphore on a FS_IOC_FIEMAP of the extent list on a specially crafted mmap file. context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0x165/0x360 kernel/sched/core.c:7058 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115 rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591 ocfs2_page_mkwrite+0x2ff/0xc40 fs/ocfs2/mmap.c:142 do_page_mkwrite+0x14d/0x310 mm/memory.c:3361 wp_page_shared mm/memory.c:3762 [inline] do_wp_page+0x268d/0x5800 mm/memory.c:3981 handle_pte_fault mm/memory.c:6068 [inline] __handle_mm_fault+0x1033/0x5440 mm/memory.c:6195 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] RIP: 0010:raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline] RIP: 0010:_inline_copy_to_user include/linux/uaccess.h:197 [inline] RIP: 0010:",
    "evidence": "osv:CVE-2025-39885",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.300",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.245",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.194",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.1.153",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.107",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.12.48",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-39885",
      "aliases": [
        "CVE-2025-39885"
      ],
      "affected": [
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              "type": "GIT",
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                },
                {
                  "fixed": "7e1514bd44ef68007703c752c99ff7319f35bce6"
                },
                {
                  "fixed": "ef30404980e4c832ef9bba1b10c08f67fa77a9ec"
                },
                {
                  "fixed": "36054554772f95d090eb45793faf6aa3c0254b02"
                },
                {
                  "fixed": "0709bc11b942870fc0a7be150e42aea42321093a"
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                {
                  "fixed": "1d3c96547ee2ddeaddf8f19a3ef99ea06cc8115e"
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                  "fixed": "9efcb7a8b97310efed995397941a292cf89fa94f"
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                {
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39885.json"
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        {
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                  "introduced": "2.6.28"
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            {
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:49.600476410Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/04100f775c2ea501927f508f17ad824ad1f23c8d",
        "https://git.kernel.org/stable/c/0709bc11b942870fc0a7be150e42aea42321093a",
        "https://git.kernel.org/stable/c/16e518ca84dfe860c20a62f3615e14e8af0ace57",
        "https://git.kernel.org/stable/c/1d3c96547ee2ddeaddf8f19a3ef99ea06cc8115e",
        "https://git.kernel.org/stable/c/36054554772f95d090eb45793faf6aa3c0254b02",
        "https://git.kernel.org/stable/c/7e1514bd44ef68007703c752c99ff7319f35bce6",
        "https://git.kernel.org/stable/c/9efcb7a8b97310efed995397941a292cf89fa94f",
        "https://git.kernel.org/stable/c/ef30404980e4c832ef9bba1b10c08f67fa77a9ec",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39885.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39885",
        "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/2025/39xxx/CVE-2025-39885.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39885",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518081,
  "published_at": "2025-09-23T06:00:52.584+00:00"
}