CVE-2026-45939

In the Linux kernel, the following vulnerability has been resolved: gpib: Fix memory leak in ni_usb_init() In ni_usb_init(), if ni_usb_setup_init() fails, the function returns -EFAULT without freeing the allocated writes buffer, leading to a memory leak. Additionally, ni_usb_setup_init() returns 0 on failure, which causes ni_usb_init() to return -EFAULT, an inappropriate error code for this situation. Fix the leak by freeing writes in the error path. Modify ni_usb_setup_init() to return -EINVAL on failure and propagate this error code in ni_usb_init().

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/9c97fcfb7a62dea893104a046d544da8ac23370b	Patch
https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586	Patch
https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38	Patch

Configurations

Configuration 1 (hide)

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

History

24 Jun 2026, 17:09

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel::::::::
First Time		Linux linux Kernel Linux
CWE		CWE-401
References	~~() https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b -~~	() https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b - Patch
References	~~() https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586 -~~	() https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586 - Patch
References	~~() https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38 -~~	() https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5

27 May 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-27 14:17

Updated : 2026-06-24 17:09

NVD link : CVE-2026-45939

Mitre link : CVE-2026-45939

CVE.ORG link : CVE-2026-45939

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2026-45939", "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": "4e127de14fa78bcd98c6459b0b984b8266cd0203", "lessThan": "9c97fcfb7a62dea893104a046d544da8ac23370b", "versionType": "git"}, {"status": "affected", "version": "4e127de14fa78bcd98c6459b0b984b8266cd0203", "lessThan": "c899d4b62c0757a280831e89c1f3801b597e8f38", "versionType": "git"}, {"status": "affected", "version": "4e127de14fa78bcd98c6459b0b984b8266cd0203", "lessThan": "b89921eed8cf2d97250bac4be38dbcfbf048b586", "versionType": "git"}], "programFiles": ["drivers/gpib/ni_usb/ni_usb_gpib.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"status": "unaffected", "version": "0", "lessThan": "6.13", "versionType": "semver"}, {"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/gpib/ni_usb/ni_usb_gpib.c"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:17:10.083", "references": [{"url": "https://git.kernel.org/stable/c/9c97fcfb7a62dea893104a046d544da8ac23370b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b89921eed8cf2d97250bac4be38dbcfbf048b586", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c899d4b62c0757a280831e89c1f3801b597e8f38", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "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\ngpib: Fix memory leak in ni_usb_init()\n\nIn ni_usb_init(), if ni_usb_setup_init() fails, the function returns\n-EFAULT without freeing the allocated writes buffer, leading to a\nmemory leak.\n\nAdditionally, ni_usb_setup_init() returns 0 on failure, which causes\nni_usb_init() to return -EFAULT, an inappropriate error code for this\nsituation.\n\nFix the leak by freeing writes in the error path. Modify\nni_usb_setup_init() to return -EINVAL on failure and propagate this\nerror code in ni_usb_init()."}], "lastModified": "2026-06-24T17:09:37.397", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"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"}