CVE-2026-45922

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function allocates memory for the device path using kobject_get_path(). If the length of the device path exceeds the output buffer length, the function returns -ENOSPC but does not free the allocated memory, resulting in a memory leak. Add a kfree() call to the error path to ensure the allocated memory is properly freed. Compile tested only. Issue found using a prototype static analysis tool and code review.

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/9b9d253908478f504297ac283c514e5953ddafa6	Patch
https://git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2	Patch
https://git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc	Patch
https://git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-05-27 14:17

Updated : 2026-06-24 17:21

NVD link : CVE-2026-45922

Mitre link : CVE-2026-45922

CVE.ORG link : CVE-2026-45922

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2026-45922", "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}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ec7ad6530909983c8736c80af46e3529ce7bab55", "lessThan": "ee998cdbff6680891b0efd9d6ce53a388e5342c3", "versionType": "git"}, {"status": "affected", "version": "ec7ad6530909983c8736c80af46e3529ce7bab55", "lessThan": "b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2", "versionType": "git"}, {"status": "affected", "version": "ec7ad6530909983c8736c80af46e3529ce7bab55", "lessThan": "b3a10eca24fcfe913c0875e620f19596001bd6dc", "versionType": "git"}, {"status": "affected", "version": "ec7ad6530909983c8736c80af46e3529ce7bab55", "lessThan": "9b9d253908478f504297ac283c514e5953ddafa6", "versionType": "git"}], "programFiles": ["drivers/infiniband/hw/mlx5/std_types.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"status": "unaffected", "version": "0", "lessThan": "6.12", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.14", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.4", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/infiniband/hw/mlx5/std_types.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:17:07.180", "references": [{"url": "https://git.kernel.org/stable/c/9b9d253908478f504297ac283c514e5953ddafa6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler\n\nThe UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function\nallocates memory for the device path using kobject_get_path(). If the\nlength of the device path exceeds the output buffer length, the function\nreturns -ENOSPC but does not free the allocated memory, resulting in a\nmemory leak.\n\nAdd a kfree() call to the error path to ensure the allocated memory is\nproperly freed.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."}], "lastModified": "2026-06-24T17:21:55.420", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "91F4DDF8-DCB5-433F-9A96-EB7DD49CF8DB", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}