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CVE-2025-38210 (GCVE-0-2025-38210)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2026-05-11 21:23

Title

configfs-tsm-report: Fix NULL dereference of tsm_ops

Summary

In the Linux kernel, the following vulnerability has been resolved: configfs-tsm-report: Fix NULL dereference of tsm_ops Unlike sysfs, the lifetime of configfs objects is controlled by userspace. There is no mechanism for the kernel to find and delete all created config-items. Instead, the configfs-tsm-report mechanism has an expectation that tsm_unregister() can happen at any time and cause established config-item access to start failing. That expectation is not fully satisfied. While tsm_report_read(), tsm_report_{is,is_bin}_visible(), and tsm_report_make_item() safely fail if tsm_ops have been unregistered, tsm_report_privlevel_store() tsm_report_provider_show() fail to check for ops registration. Add the missing checks for tsm_ops having been removed. Now, in supporting the ability for tsm_unregister() to always succeed, it leaves the problem of what to do with lingering config-items. The expectation is that the admin that arranges for the ->remove() (unbind) of the ${tsm_arch}-guest driver is also responsible for deletion of all open config-items. Until that deletion happens, ->probe() (reload / bind) of the ${tsm_arch}-guest driver fails. This allows for emergency shutdown / revocation of attestation interfaces, and requires coordinated restart.

Severity

5.5 (Medium)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/015f04ac884a454d4…
https://git.kernel.org/stable/c/cefbafcbdef011d6e…
https://git.kernel.org/stable/c/fba4ceaa242d2bdf4…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 70e6f7e2b98575621019aa40ac616be58ff984e0 , < 015f04ac884a454d4d8aaa7b67758f047742b1cf (git) Affected: 70e6f7e2b98575621019aa40ac616be58ff984e0 , < cefbafcbdef011d6ef9414902311afdfba3c33eb (git) Affected: 70e6f7e2b98575621019aa40ac616be58ff984e0 , < fba4ceaa242d2bdf4c04b77bda41d32d02d3925d (git)	guessed
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.35 , ≤ 6.12.* (semver) Unaffected: 6.15.4 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)	guessed

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/virt/coco/tsm.c"
          ],
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          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "6.15.4",
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    "dateReserved": "2025-04-16T04:51:23.994Z",
    "dateUpdated": "2026-05-11T21:23:23.157Z",
    "state": "PUBLISHED"
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      "date": "2026-09-16",
      "epss": "0.00154",
      "percentile": "0.04935"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38210\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:29.207\",\"lastModified\":\"2026-06-17T09:16:23.667\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nconfigfs-tsm-report: Fix NULL dereference of tsm_ops\\n\\nUnlike sysfs, the lifetime of configfs objects is controlled by\\nuserspace. There is no mechanism for the kernel to find and delete all\\ncreated config-items. Instead, the configfs-tsm-report mechanism has an\\nexpectation that tsm_unregister() can happen at any time and cause\\nestablished config-item access to start failing.\\n\\nThat expectation is not fully satisfied. While tsm_report_read(),\\ntsm_report_{is,is_bin}_visible(), and tsm_report_make_item() safely fail\\nif tsm_ops have been unregistered, tsm_report_privlevel_store()\\ntsm_report_provider_show() fail to check for ops registration. Add the\\nmissing checks for tsm_ops having been removed.\\n\\nNow, in supporting the ability for tsm_unregister() to always succeed,\\nit leaves the problem of what to do with lingering config-items. The\\nexpectation is that the admin that arranges for the -\u003eremove() (unbind)\\nof the ${tsm_arch}-guest driver is also responsible for deletion of all\\nopen config-items. Until that deletion happens, -\u003eprobe() (reload /\\nbind) of the ${tsm_arch}-guest driver fails.\\n\\nThis allows for emergency shutdown / revocation of attestation\\ninterfaces, and requires coordinated restart.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: configfs-tsm-report: Arregla la desreferencia NULL de tsm_ops A diferencia de sysfs, el tiempo de vida de los objetos configfs est\u00e1 controlado por el espacio de usuario. No hay ning\u00fan mecanismo para que el kernel encuentre y elimine todos los elementos de configuraci\u00f3n creados. En cambio, el mecanismo configfs-tsm-report tiene una expectativa de que tsm_unregister() puede suceder en cualquier momento y hacer que el acceso establecido a los elementos de configuraci\u00f3n empiece a fallar. Esa expectativa no se cumple por completo. Mientras que tsm_report_read(), tsm_report_{is,is_bin}_visible() y tsm_report_make_item() fallan de forma segura si se ha anulado el registro de tsm_ops, tsm_report_privlevel_store() y tsm_report_provider_show() no comprueban el registro de operaciones. A\u00f1ade las comprobaciones que faltan para que se hayan eliminado los tsm_ops. Ahora, al permitir que tsm_unregister() siempre se ejecute correctamente, se plantea el problema de qu\u00e9 hacer con los elementos de configuraci\u00f3n persistentes. Se espera que el administrador que gestiona la eliminaci\u00f3n del controlador invitado ${tsm_arch} tambi\u00e9n sea responsable de eliminar todos los elementos de configuraci\u00f3n abiertos. Hasta que se elimine, la recarga y la vinculaci\u00f3n del controlador invitado ${tsm_arch} falla. 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    "redhat_vex": {
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      "cve": "CVE-2025-38210",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38210",
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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.
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CVE-2025-38210 (GCVE-0-2025-38210)

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Nomenclature

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