Vulnerability-Lookup

GHSA-7FHW-47Q5-MGV8

Vulnerability from github – Published: 2025-07-25 15:30 – Updated: 2025-12-23 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks

After retrieving WMI data blocks in sysfs callbacks, check for the validity of them before dereferencing their content.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38412"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T14:15:32Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks\n\nAfter retrieving WMI data blocks in sysfs callbacks, check for the\nvalidity of them before dereferencing their content.",
  "id": "GHSA-7fhw-47q5-mgv8",
  "modified": "2025-12-23T21:30:22Z",
  "published": "2025-07-25T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38412"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0deb3eb78ebf225cb41aa9b2b2150f46cbfd359e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5df3b870bc389a1767c72448a3ce1c576ef4deab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68e9963583d11963ceca5d276e9c44684509f759"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92c2d914b5337431d885597a79a3a3d9d55e80b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aaf847dcb4114fe8b25d4c1c790bedcb6088cb3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb617dd25ca176f3fee24f873f0fd60010773d67"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38412 (GCVE-0-2025-38412)

Vulnerability from cvelistv5 – Published: 2025-07-25 13:20 – Updated: 2026-08-05 12:01

Title

platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks

Summary

In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks After retrieving WMI data blocks in sysfs callbacks, check for the validity of them before dereferencing their content.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/92c2d914b5337431d…
https://git.kernel.org/stable/c/68e9963583d11963c…
https://git.kernel.org/stable/c/0deb3eb78ebf225cb…
https://git.kernel.org/stable/c/5df3b870bc389a176…
https://git.kernel.org/stable/c/aaf847dcb4114fe8b…
https://git.kernel.org/stable/c/eb617dd25ca176f3f…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < 92c2d914b5337431d885597a79a3a3d9d55e80b7 (git) Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < 68e9963583d11963ceca5d276e9c44684509f759 (git) Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < 0deb3eb78ebf225cb41aa9b2b2150f46cbfd359e (git) Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < 5df3b870bc389a1767c72448a3ce1c576ef4deab (git) Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < aaf847dcb4114fe8b25d4c1c790bedcb6088cb3d (git) Affected: e8a60aa7404bfef37705da5607c97737073ac38d , < eb617dd25ca176f3fee24f873f0fd60010773d67 (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.187 , ≤ 5.15.* (semver) Unaffected: 6.1.144 , ≤ 6.1.* (semver) Unaffected: 6.6.97 , ≤ 6.6.* (semver) Unaffected: 6.12.37 , ≤ 6.12.* (semver) Unaffected: 6.15.6 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:37:44.050Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "title": "CVE Program Container"
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        {
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            "drivers/platform/x86/dell/dell-wmi-sysman/dell-wmi-sysman.h",
            "drivers/platform/x86/dell/dell-wmi-sysman/enum-attributes.c",
            "drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c",
            "drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c",
            "drivers/platform/x86/dell/dell-wmi-sysman/string-attributes.c",
            "drivers/platform/x86/dell/dell-wmi-sysman/sysman.c"
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            "drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c",
            "drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c",
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "6.15.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
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        }
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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              "lang": "en",
              "value": "AV:L - The vulnerability is reached only through a sysfs file read on the local machine (`/sys/class/firmware-attributes/dell-wmi-sysman/...`), which requires local access to the system. There is no network, adjacent-network, or physical-only path to `is_enabled_show()`/`current_value_show()`.\nAC:L - On an affected Dell/Alienware system whose firmware returns a non-package or short WMI data block, a single `cat` of the sysfs file deterministically and repeatably hits the unvalidated dereference \u2014 no race to win, no memory-layout grooming, and no state the attacker must wait for. The attack can be repeated arbitrarily to re-trigger the fault or harvest additional leaked bytes.\nPR:L - `passobj-attributes.c` exposes `is_enabled` via `__ATTR_RO()`, i.e. mode 0444, so any unprivileged local user can read it and drive `is_enabled_show()` into the unchecked `obj-\u003epackage.elements[IS_PASS_SET]` dereference; only a basic user account is needed, not root.\nUI:N - The attacker performs the triggering read themselves via an ordinary open()/read() on the world-readable sysfs attribute. No victim action, no privileged helper, and no administrator interaction is required.\nS:U - The out-of-bounds read, wild-pointer dereference, and any resulting crash all occur inside the kernel of the same system, managed by the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The type confusion turns a firmware-supplied 64-bit value (or a string/buffer data pointer) into the `elements` array base, yielding an out-of-bounds \u2014 effectively arbitrary-address \u2014 kernel read whose result is then formatted with `snprintf(\"%s\"/\"%lld\")` straight into the sysfs buffer returned to userspace. Because the vulnerable `is_enabled` attribute is world-readable, an unprivileged user obtains a repeatable kernel memory disclosure primitive.\nI:H - This is a genuine type confusion \u2014 a `union acpi_object` of type Integer/String/Buffer is interpreted as a Package, so an attacker-influencable firmware value is consumed as a kernel pointer and indexed. Per the type-confusion classification, and given that a firmware-controlled pointer dereference in a driver that also performs BIOS attribute and password-object operations undermines the integrity of the kernel\u0027s view of that data, this is scored High.\nA:H - Dereferencing the confused `elements` pointer (an arbitrary firmware integer, or an out-of-bounds address past a buffer/short package) reliably produces an unhandled page fault and kernel oops/panic, and the subsequent `%s` dereference of an out-of-bounds `string.pointer` compounds this. Any local user can trigger it on demand by reading the 0444 `is_enabled` file, making it a repeatable full denial of service."
            }
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        }
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      "title": "platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks",
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    "datePublished": "2025-07-25T13:20:16.688Z",
    "dateReserved": "2025-04-16T04:51:24.013Z",
    "dateUpdated": "2026-08-05T12:01:41.721Z",
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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.