CVE-2025-38243

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid inode pointer dereferences during log replay In a few places where we call read_one_inode(), if we get a NULL pointer we end up jumping into an error path, or fallthrough in case of __add_inode_ref(), where we then do something like this: iput(&inode->vfs_inode); which results in an invalid inode pointer that triggers an invalid memory access, resulting in a crash. Fix this by making sure we don't do such dereferences.

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/2dcf838cf5c2f0f4501edaa1680fcad03618d760	Patch
https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba	Patch
https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc3::::::

History

No history.

Information

Published : 2025-07-09 11:15

Updated : 2025-11-19 15:37

NVD link : CVE-2025-38243

Mitre link : CVE-2025-38243

CVE.ORG link : CVE-2025-38243

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2025-38243", "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}]}, "published": "2025-07-09T11:15:26.350", "references": [{"url": "https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix invalid inode pointer dereferences during log replay\n\nIn a few places where we call read_one_inode(), if we get a NULL pointer\nwe end up jumping into an error path, or fallthrough in case of\n__add_inode_ref(), where we then do something like this:\n\n iput(&inode->vfs_inode);\n\nwhich results in an invalid inode pointer that triggers an invalid memory\naccess, resulting in a crash.\n\nFix this by making sure we don't do such dereferences."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: correcci\u00f3n de desreferencias de punteros inodos no v\u00e1lidos durante la reproducci\u00f3n de registros. En algunos casos, al ejecutar read_one_inode(), si se obtiene un puntero nulo, se accede a una ruta de error o a una ruta de paso en el caso de __add_inode_ref(). En este caso, se realiza algo como: iput(&inode->vfs_inode);, lo que genera un puntero inodo no v\u00e1lido que desencadena un acceso no v\u00e1lido a memoria y provoca un fallo. Para solucionar esto, es necesario asegurarse de no realizar dichas desreferencias."}], "lastModified": "2025-11-19T15:37:27.197", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4823E88-411C-4CCD-AA8D-3917D070E873", "versionEndExcluding": "6.15.5", "versionStartIncluding": "6.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}