CVE-2025-68229 (GCVE-0-2025-68229)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:57 – Updated: 2026-06-16 16:20
VLAI
Title
scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
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 ...
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 16:20 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < 63f511d3855f7f4b35dd63dbc58fc3d935a81268 (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < 3d8c517f6eb27e47b1a198e05f8023038329b40b (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < f449a1edd7a13bb025aaf9342ea6f8bf92684bbf (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < 1c9ba455b5073253ceaadae4859546e38e8261fe (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < a6ef60898ddaf1414592ce3e5b0d94276d631663 (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < 72e8831079266749a7023618a0de2f289a9dced6 (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < 13aff3b8a7184281b134698704d6c06863a8361b (git)
Affected: 2628b352c3d4905adf8129ea50900bd980b6ccef , < e6965188f84a7883e6a0d3448e86b0cf29b24dfc (git)
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Linux Linux Affected: 4.5
Unaffected: 0 , < 4.5 (semver)
Unaffected: 5.4.302 , ≤ 5.4.* (semver)
Unaffected: 5.10.247 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.118 , ≤ 6.6.* (semver)
Unaffected: 6.12.60 , ≤ 6.12.* (semver)
Unaffected: 6.17.10 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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        "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": {
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                "options": [
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        "published": "2025-12-16T14:15:57.067",
        "references": [
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            "url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b"
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          },
          {
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            "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"
          },
          {
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            "url": "https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663"
          },
          {
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:39:35+00:00",
      "cve": "CVE-2025-68229",
      "id": "CVE-2025-68229",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68229.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-68229",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-06-16T16:20:41.324654Z",
                    "version": "2.0.3"
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            "providerMetadata": {
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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              "product": "Linux",
              "programFiles": [
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              "vendor": "Linux",
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
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                  "version": "4.5"
                },
                {
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
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                  "status": "unaffected",
                  "version": "5.4.302",
                  "versionType": "semver"
                },
                {
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                  "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"
                },
                {
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                  "version": "6.6.118",
                  "versionType": "semver"
                },
                {
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                  "version": "6.12.60",
                  "versionType": "semver"
                },
                {
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                  "status": "unaffected",
                  "version": "6.17.10",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.18",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
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              "nodes": [
                {
                  "cpeMatch": [
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                      "vulnerable": true
                    },
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                  "operator": "OR"
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          ],
          "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..."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:49:19.685Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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              "url": "https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268"
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              "url": "https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b"
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            },
            {
              "url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b"
            },
            {
              "url": "https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc"
            }
          ],
          "title": "scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()",
          "x_generator": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2025-68229",
        "datePublished": "2025-12-16T13:57:21.835Z",
        "dateReserved": "2025-12-16T13:41:40.258Z",
        "dateUpdated": "2026-06-16T16:20:56.408Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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