CVE-2025-21798

In the Linux kernel, the following vulnerability has been resolved: firewire: test: Fix potential null dereference in firewire kunit test kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL check may lead to NULL dereference. Add a NULL check for test_state.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/352fafe97784e81a10a7c74bd508f71a19b53c2a	Patch
https://git.kernel.org/stable/c/70fcb25472d90dd3b87cbee74b9eb68670b0c7b8	Patch
https://git.kernel.org/stable/c/c6896bf4c611c3dd126f3e03685f2360a18b3d6f	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

01 Oct 2025, 20:18

Type	Values Removed	Values Added
CWE		CWE-476
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
First Time		Linux Linux linux Kernel
CPE		cpe:2.3:o:linux:linux_kernel::::::::
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firewire: test: Se corrige una posible desreferencia nula en la prueba kunit de firewire kunit_kzalloc() puede devolver un puntero NULL, desreferenciarlo sin la comprobación NULL puede provocar una desreferencia NULL. Se añade una comprobación NULL para test_state.
References	~~() https://git.kernel.org/stable/c/352fafe97784e81a10a7c74bd508f71a19b53c2a -~~	() https://git.kernel.org/stable/c/352fafe97784e81a10a7c74bd508f71a19b53c2a - Patch
References	~~() https://git.kernel.org/stable/c/70fcb25472d90dd3b87cbee74b9eb68670b0c7b8 -~~	() https://git.kernel.org/stable/c/70fcb25472d90dd3b87cbee74b9eb68670b0c7b8 - Patch
References	~~() https://git.kernel.org/stable/c/c6896bf4c611c3dd126f3e03685f2360a18b3d6f -~~	() https://git.kernel.org/stable/c/c6896bf4c611c3dd126f3e03685f2360a18b3d6f - Patch

27 Feb 2025, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-02-27 20:16

Updated : 2025-10-01 20:18

NVD link : CVE-2025-21798

Mitre link : CVE-2025-21798

CVE.ORG link : CVE-2025-21798

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2025-21798", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-02-27T20:16:02.477", "references": [{"url": "https://git.kernel.org/stable/c/352fafe97784e81a10a7c74bd508f71a19b53c2a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/70fcb25472d90dd3b87cbee74b9eb68670b0c7b8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c6896bf4c611c3dd126f3e03685f2360a18b3d6f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirewire: test: Fix potential null dereference in firewire kunit test\n\nkunit_kzalloc() may return a NULL pointer, dereferencing it without\nNULL check may lead to NULL dereference.\nAdd a NULL check for test_state."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firewire: test: Se corrige una posible desreferencia nula en la prueba kunit de firewire kunit_kzalloc() puede devolver un puntero NULL, desreferenciarlo sin la comprobaci\u00f3n NULL puede provocar una desreferencia NULL. Se a\u00f1ade una comprobaci\u00f3n NULL para test_state."}], "lastModified": "2025-10-01T20:18:26.890", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90360375-07E4-448D-B423-70059CF084B4", "versionEndExcluding": "6.12.13", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D4116B1-1BFD-4F23-BA84-169CC05FC5A3", "versionEndExcluding": "6.13.2", "versionStartIncluding": "6.13"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}