CVE-2026-23137

In the Linux kernel, the following vulnerability has been resolved: of: unittest: Fix memory leak in unittest_data_add() In unittest_data_add(), if of_resolve_phandles() fails, the allocated unittest_data is not freed, leading to a memory leak. Fix this by using scope-based cleanup helper __free(kfree) for automatic resource cleanup. This ensures unittest_data is automatically freed when it goes out of scope in error paths. For the success path, use retain_and_null_ptr() to transfer ownership of the memory to the device tree and prevent double freeing.

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/235a1eb8d2dcc49a6cf0a5ee1aa85544a5d0054b	Patch
https://git.kernel.org/stable/c/4bafaec9e3a784d103ab9da11095708fcca70e76
https://git.kernel.org/stable/c/4c7ad40c285ab85e3614433e063f14aac2e2fe17
https://git.kernel.org/stable/c/58baf98d1bdab897fd796f39a16061bade229d71
https://git.kernel.org/stable/c/f09b0f705bd7197863b90256ef533a6414d1db2c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::

History

30 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/4bafaec9e3a784d103ab9da11095708fcca70e76 -

21 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/4c7ad40c285ab85e3614433e063f14aac2e2fe17 -

Information

Published : 2026-02-14 16:15

Updated : 2026-10-30 13:18

NVD link : CVE-2026-23137

Mitre link : CVE-2026-23137

CVE.ORG link : CVE-2026-23137

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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This ensures unittest_data is automatically freed when\nit goes out of scope in error paths.\n\nFor the success path, use retain_and_null_ptr() to transfer ownership\nof the memory to the device tree and prevent double freeing."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nof: unittest: Correcci\u00f3n de fuga de memoria en unittest_data_add()\n\nEn unittest_data_add(), si of_resolve_phandles() falla, el unittest_data asignado no se libera, lo que provoca una fuga de memoria.\n\nEsto se soluciona usando un ayudante de limpieza basado en el \u00e1mbito __free(kfree) para la limpieza autom\u00e1tica de recursos. Esto asegura que unittest_data se libera autom\u00e1ticamente cuando sale del \u00e1mbito en rutas de error.\n\nPara la ruta de \u00e9xito, use retain_and_null_ptr() para transferir la propiedad de la memoria al \u00e1rbol de dispositivos y evitar la doble liberaci\u00f3n."}], "lastModified": "2026-10-30T13:18:33.770", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CE21EC83-E3EF-4E6F-862D-1E8DA63CBCD0", "versionEndExcluding": "6.18.6", "versionStartIncluding": "3.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}