FKIE_CVE-2025-68229

Vulnerability from fkie_nvd - Published: 2025-12-16 14:15 - Updated: 2026-10-14 13:10
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show() If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ...
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/loopback/tcm_loop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "63f511d3855f7f4b35dd63dbc58fc3d935a81268",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "3d8c517f6eb27e47b1a198e05f8023038329b40b",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "f449a1edd7a13bb025aaf9342ea6f8bf92684bbf",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "1c9ba455b5073253ceaadae4859546e38e8261fe",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "a6ef60898ddaf1414592ce3e5b0d94276d631663",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "72e8831079266749a7023618a0de2f289a9dced6",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "13aff3b8a7184281b134698704d6c06863a8361b",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            },
            {
              "lessThan": "e6965188f84a7883e6a0d3448e86b0cf29b24dfc",
              "status": "affected",
              "version": "2628b352c3d4905adf8129ea50900bd980b6ccef",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/loopback/tcm_loop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.5"
            },
            {
              "lessThan": "4.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.302",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.118",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.60",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()\n\nIf the allocation of tl_hba-\u003esh fails in tcm_loop_driver_probe() and we\nattempt to dereference it in tcm_loop_tpg_address_show() we will get a\nsegfault, see below for an example. So, check tl_hba-\u003esh before\ndereferencing it.\n\n  Unable to allocate struct scsi_host\n  BUG: kernel NULL pointer dereference, address: 0000000000000194\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 0 P4D 0\n  Oops: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1\n  Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024\n  RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\n...\n  Call Trace:\n   \u003cTASK\u003e\n   configfs_read_iter+0x12d/0x1d0 [configfs]\n   vfs_read+0x1b5/0x300\n   ksys_read+0x6f/0xf0\n..."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: target: tcm_loop: Correcci\u00f3n de fallo de segmentaci\u00f3n en tcm_loop_tpg_address_show()\n\nSi la asignaci\u00f3n de tl_hba -\u003e sh falla en tcm_loop_driver_probe() e intentamos desreferenciarlo en tcm_loop_tpg_address_show(), obtendremos un fallo de segmentaci\u00f3n, v\u00e9ase un ejemplo a continuaci\u00f3n. Por lo tanto, compruebe tl_hba -\u003e sh antes de desreferenciarlo.\n\n  No se puede asignar la estructura scsi_host\n  BUG: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000194\n  #PF: acceso de lectura de supervisor en modo kernel\n  #PF: error_code(0x0000) - p\u00e1gina no presente\n  PGD 0 P4D 0\n  Oops: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 1 PID: 8356 Comm: tokio-runtime-w No contaminado 6.6.104.2-4.azl3 #1\n  Nombre del hardware: Microsoft Corporation M\u00e1quina virtual/M\u00e1quina virtual, BIOS Hyper-V UEFI Release v4.1 09/28/2024\n  RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\n...\n  Rastro de llamada:\n   \u003cTAREA\u003e\n   configfs_read_iter+0x12d/0x1d0 [configfs]\n   vfs_read+0x1b5/0x300\n   ksys_read+0x6f/0xf0\n..."
    }
  ],
  "id": "CVE-2025-68229",
  "lastModified": "2026-10-14T13:10:00.187",
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68229",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-16T16:20:41.324654Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-16T14:15:57.067",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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