CVE-2022-50057 (GCVE-0-2022-50057)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-11 19:12
VLAI
Title
fs/ntfs3: Fix NULL deref in ntfs_update_mftmirr
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix NULL deref in ntfs_update_mftmirr If ntfs_fill_super() wasn't called then sbi->sb will be equal to NULL. Code should check this ptr before dereferencing. Syzbot hit this issue via passing wrong mount param as can be seen from log below Fail log: ntfs3: Unknown parameter 'iochvrset' general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 ... Call Trace: <TASK> put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline]
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 8e8e1a84dac7a3d2b432162a70d7fb6a75960772 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < bf6089dc01ba3194ab962105d7b85690843c256f (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 321460ca3b55f48b3ba6008248264ab2bd6407d9 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.63 , ≤ 5.15.* (semver)
Unaffected: 5.19.4 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix NULL deref in ntfs_update_mftmirr\n\nIf ntfs_fill_super() wasn\u0027t called then sbi-\u003esb will be equal to NULL.\nCode should check this ptr before dereferencing. Syzbot hit this issue\nvia passing wrong mount param as can be seen from log below\n\nFail log:\nntfs3: Unknown parameter \u0027iochvrset\u0027\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]\nCPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0\n...\nCall Trace:\n \u003cTASK\u003e\n put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463\n ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363\n put_fs_context+0x119/0x7a0 fs/fs_context.c:469\n do_new_mount+0x2b4/0xad0 fs/namespace.c:3044\n do_mount fs/namespace.c:3383 [inline]\n __do_sys_mount fs/namespace.c:3591 [inline]"
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/ntfs3: Se corrige la desreferenciaci\u00f3n NULL en ntfs_update_mftmirr. Si no se invoc\u00f3 ntfs_fill_super(), sbi-\u0026gt;sb ser\u00e1 igual a NULL. El c\u00f3digo debe comprobar este ptr antes de desreferenciar. Syzbot encontr\u00f3 este problema al pasar un par\u00e1metro de montaje incorrecto como se puede ver en el registro a continuaci\u00f3n. Registro de errores: ntfs3: Error de protecci\u00f3n general del par\u00e1metro desconocido \u0027iochvrset\u0027, probablemente para una direcci\u00f3n no can\u00f3nica 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref en el rango [0x000000000000018-0x000000000000001f] CPU: 1 PID: 3589 Comm: syz-executor210 No contaminado 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 ... Rastreo de llamadas:  put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [en l\u00ednea] __do_sys_mount fs/namespace.c:3591 [en l\u00ednea]"
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        "id": "CVE-2022-50057",
        "lastModified": "2026-06-17T05:22:39.463",
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                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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        "vulnStatus": "Analyzed",
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                "lang": "en",
                "value": "CWE-476"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:27:37+00:00",
      "cve": "CVE-2022-50057",
      "id": "CVE-2022-50057",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs/ntfs3: Fix NULL deref in ntfs_update_mftmirr",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50057.json",
      "version": "3"
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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