Vulnerability-Lookup

FKIE_CVE-2025-71135

Vulnerability from fkie_nvd - Published: 2026-01-14 15:16 - Updated: 2026-03-25 18:03

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt() The variable mddev->private is first assigned to conf and then checked: conf = mddev->private; if (!conf) ... If conf is NULL, then mddev->private is also NULL. In this case, null-pointer dereferences can occur when calling raid5_quiesce(): raid5_quiesce(mddev, true); raid5_quiesce(mddev, false); since mddev->private is assigned to conf again in raid5_quiesce(), and conf is dereferenced in several places, for example: conf->quiesce = 0; wake_up(&conf->wait_for_quiescent); To fix this issue, the function should unlock mddev and return before invoking raid5_quiesce() when conf is NULL, following the existing pattern in raid5_change_consistency_policy().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20597b7229aea8b5bc45cd92097640257c7fc33b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7ad6ef91d8745d04aff9cce7bdbc6320d8e05fe9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e5abb6af905de6b2fead8a0b3f32ab0b81468a01	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.13
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

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    {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt()\n\nThe variable mddev-\u003eprivate is first assigned to conf and then checked:\n\n  conf = mddev-\u003eprivate;\n  if (!conf) ...\n\nIf conf is NULL, then mddev-\u003eprivate is also NULL. In this case,\nnull-pointer dereferences can occur when calling raid5_quiesce():\n\n  raid5_quiesce(mddev, true);\n  raid5_quiesce(mddev, false);\n\nsince mddev-\u003eprivate is assigned to conf again in raid5_quiesce(), and conf\nis dereferenced in several places, for example:\n\n  conf-\u003equiesce = 0;\n  wake_up(\u0026conf-\u003ewait_for_quiescent);\n\nTo fix this issue, the function should unlock mddev and return before\ninvoking raid5_quiesce() when conf is NULL, following the existing pattern\nin raid5_change_consistency_policy()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmd/raid5: corrige posibles desreferencias de puntero nulo en raid5_store_group_thread_cnt()\n\nLa variable mddev-\u0026gt;private se asigna primero a conf y luego se comprueba:\n\n  conf = mddev-\u0026gt;private;\n  if (!conf) ...\n\nSi conf es NULL, entonces mddev-\u0026gt;private tambi\u00e9n es NULL. En este caso,\npueden ocurrir desreferencias de puntero nulo al llamar a raid5_quiesce():\n\n  raid5_quiesce(mddev, true);\n  raid5_quiesce(mddev, false);\n\nya que mddev-\u0026gt;private se asigna a conf de nuevo en raid5_quiesce(), y conf\nse desreferencia en varios lugares, por ejemplo:\n\n  conf-\u0026gt;quiesce = 0;\n  wake_up(\u0026amp;conf-\u0026gt;wait_for_quiescent);\n\nPara solucionar este problema, la funci\u00f3n deber\u00eda desbloquear mddev y retornar antes de\ninvocar raid5_quiesce() cuando conf es NULL, siguiendo el patr\u00f3n existente\nen raid5_change_consistency_policy()."
    }
  ],
  "id": "CVE-2025-71135",
  "lastModified": "2026-03-25T18:03:48.170",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-01-14T15:16:03.277",
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}

CVE-2025-71135 (GCVE-0-2025-71135)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:07 – Updated: 2026-02-09 08:35

Title

md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/20597b7229aea8b5b…
	https://git.kernel.org/stable/c/e5abb6af905de6b2f…
	https://git.kernel.org/stable/c/7ad6ef91d8745d04a…

Impacted products

Vendor

Product

Version

Linux

Affected: be19e6e4339d1579d5f2fae8ce4facf9521dbbfc , < 20597b7229aea8b5bc45cd92097640257c7fc33b (git)
Affected: fa1944bbe6220eb929e2c02e5e8706b908565711 , < e5abb6af905de6b2fead8a0b3f32ab0b81468a01 (git)
Affected: fa1944bbe6220eb929e2c02e5e8706b908565711 , < 7ad6ef91d8745d04aff9cce7bdbc6320d8e05fe9 (git)

Linux

Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.4 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
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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.

Action not permitted

FKIE_CVE-2025-71135

CVE-2025-71135 (GCVE-0-2025-71135)

Tags

Sightings

Nomenclature