CVE-2025-71107 (GCVE-0-2025-71107)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:05 – Updated: 2026-01-14 15:05
VLAI?
Title
f2fs: ensure node page reads complete before f2fs_put_super() finishes
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: ensure node page reads complete before f2fs_put_super() finishes Xfstests generic/335, generic/336 sometimes crash with the following message: F2FS-fs (dm-0): detect filesystem reference count leak during umount, type: 9, count: 1 ------------[ cut here ]------------ kernel BUG at fs/f2fs/super.c:1939! Oops: invalid opcode: 0000 [#1] SMP NOPTI CPU: 1 UID: 0 PID: 609351 Comm: umount Tainted: G W 6.17.0-rc5-xfstests-g9dd1835ecda5 #1 PREEMPT(none) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:f2fs_put_super+0x3b3/0x3c0 Call Trace: <TASK> generic_shutdown_super+0x7e/0x190 kill_block_super+0x1a/0x40 kill_f2fs_super+0x9d/0x190 deactivate_locked_super+0x30/0xb0 cleanup_mnt+0xba/0x150 task_work_run+0x5c/0xa0 exit_to_user_mode_loop+0xb7/0xc0 do_syscall_64+0x1ae/0x1c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> ---[ end trace 0000000000000000 ]--- It appears that sometimes it is possible that f2fs_put_super() is called before all node page reads are completed. Adding a call to f2fs_wait_on_all_pages() for F2FS_RD_NODE fixes the problem.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 20872584b8c0b006c007da9588a272c9e28d2e18 , < c3031cf2b61f1508662fc95ef9ad505cb0882a5f (git)
Affected: 20872584b8c0b006c007da9588a272c9e28d2e18 , < 3b15d5f12935e9e25f9a571e680716bc9ee61025 (git)
Affected: 20872584b8c0b006c007da9588a272c9e28d2e18 , < 0b36fae23621a09e772c8adf918b9011158f8511 (git)
Affected: 20872584b8c0b006c007da9588a272c9e28d2e18 , < 297baa4aa263ff8f5b3d246ee16a660d76aa82c4 (git)
Affected: 0e2577074b459bba7f4016f4d725ede37d48bb22 (git)
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    Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: ensure node page reads complete before f2fs_put_super() finishes\n\nXfstests generic/335, generic/336 sometimes crash with the following message:\n\nF2FS-fs (dm-0): detect filesystem reference count leak during umount, type: 9, count: 1\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/super.c:1939!\nOops: invalid opcode: 0000 [#1] SMP NOPTI\nCPU: 1 UID: 0 PID: 609351 Comm: umount Tainted: G        W           6.17.0-rc5-xfstests-g9dd1835ecda5 #1 PREEMPT(none)\nTainted: [W]=WARN\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:f2fs_put_super+0x3b3/0x3c0\nCall Trace:\n \u003cTASK\u003e\n generic_shutdown_super+0x7e/0x190\n kill_block_super+0x1a/0x40\n kill_f2fs_super+0x9d/0x190\n deactivate_locked_super+0x30/0xb0\n cleanup_mnt+0xba/0x150\n task_work_run+0x5c/0xa0\n exit_to_user_mode_loop+0xb7/0xc0\n do_syscall_64+0x1ae/0x1c0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n \u003c/TASK\u003e\n---[ end trace 0000000000000000 ]---\n\nIt appears that sometimes it is possible that f2fs_put_super() is called before\nall node page reads are completed.\nAdding a call to f2fs_wait_on_all_pages() for F2FS_RD_NODE fixes the problem."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-14T15:05:55.878Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/c3031cf2b61f1508662fc95ef9ad505cb0882a5f"
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          "url": "https://git.kernel.org/stable/c/3b15d5f12935e9e25f9a571e680716bc9ee61025"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b36fae23621a09e772c8adf918b9011158f8511"
        },
        {
          "url": "https://git.kernel.org/stable/c/297baa4aa263ff8f5b3d246ee16a660d76aa82c4"
        }
      ],
      "title": "f2fs: ensure node page reads complete before f2fs_put_super() finishes",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71107",
    "datePublished": "2026-01-14T15:05:55.878Z",
    "dateReserved": "2026-01-13T15:30:19.652Z",
    "dateUpdated": "2026-01-14T15:05:55.878Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-71107\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-14T15:15:59.763\",\"lastModified\":\"2026-01-14T16:25:12.057\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: ensure node page reads complete before f2fs_put_super() finishes\\n\\nXfstests generic/335, generic/336 sometimes crash with the following message:\\n\\nF2FS-fs (dm-0): detect filesystem reference count leak during umount, type: 9, count: 1\\n------------[ cut here ]------------\\nkernel BUG at fs/f2fs/super.c:1939!\\nOops: invalid opcode: 0000 [#1] SMP NOPTI\\nCPU: 1 UID: 0 PID: 609351 Comm: umount Tainted: G        W           6.17.0-rc5-xfstests-g9dd1835ecda5 #1 PREEMPT(none)\\nTainted: [W]=WARN\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\\nRIP: 0010:f2fs_put_super+0x3b3/0x3c0\\nCall Trace:\\n \u003cTASK\u003e\\n generic_shutdown_super+0x7e/0x190\\n kill_block_super+0x1a/0x40\\n kill_f2fs_super+0x9d/0x190\\n deactivate_locked_super+0x30/0xb0\\n cleanup_mnt+0xba/0x150\\n task_work_run+0x5c/0xa0\\n exit_to_user_mode_loop+0xb7/0xc0\\n do_syscall_64+0x1ae/0x1c0\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n \u003c/TASK\u003e\\n---[ end trace 0000000000000000 ]---\\n\\nIt appears that sometimes it is possible that f2fs_put_super() is called before\\nall node page reads are completed.\\nAdding a call to f2fs_wait_on_all_pages() for F2FS_RD_NODE fixes the problem.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b36fae23621a09e772c8adf918b9011158f8511\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/297baa4aa263ff8f5b3d246ee16a660d76aa82c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3b15d5f12935e9e25f9a571e680716bc9ee61025\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c3031cf2b61f1508662fc95ef9ad505cb0882a5f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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