CVE-2026-43160

In the Linux kernel, the following vulnerability has been resolved: mfd: macsmc: Initialize mutex Initialize struct apple_smc's mutex in apple_smc_probe(). Using the mutex uninitialized surprisingly resulted only in occasional NULL pointer dereferences in apple_smc_read() calls from the probe() functions of sub devices.

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/2d5932588f029f7787f52c29174fead9bbc6b2cf	Patch
https://git.kernel.org/stable/c/414f65d6736342c77d4ec5e7373039f4a09250dd	Patch
https://git.kernel.org/stable/c/a1e9e299c0d9ea42ab1067b39fb72e976d3f1bdb	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-05-06 12:16

Updated : 2026-06-17 10:49

NVD link : CVE-2026-43160

Mitre link : CVE-2026-43160

CVE.ORG link : CVE-2026-43160

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

{"id": "CVE-2026-43160", "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": "e038d985c9823a12cd64fa077d0c5aca2c644b67", "lessThan": "a1e9e299c0d9ea42ab1067b39fb72e976d3f1bdb", "versionType": "git"}, {"status": "affected", "version": "e038d985c9823a12cd64fa077d0c5aca2c644b67", "lessThan": "2d5932588f029f7787f52c29174fead9bbc6b2cf", "versionType": "git"}, {"status": "affected", "version": "e038d985c9823a12cd64fa077d0c5aca2c644b67", "lessThan": "414f65d6736342c77d4ec5e7373039f4a09250dd", "versionType": "git"}], "programFiles": ["drivers/mfd/macsmc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"status": "unaffected", "version": "0", "lessThan": "6.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/mfd/macsmc.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T12:16:33.997", "references": [{"url": "https://git.kernel.org/stable/c/2d5932588f029f7787f52c29174fead9bbc6b2cf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/414f65d6736342c77d4ec5e7373039f4a09250dd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a1e9e299c0d9ea42ab1067b39fb72e976d3f1bdb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: macsmc: Initialize mutex\n\nInitialize struct apple_smc's mutex in apple_smc_probe(). Using the\nmutex uninitialized surprisingly resulted only in occasional NULL\npointer dereferences in apple_smc_read() calls from the probe()\nfunctions of sub devices."}], "lastModified": "2026-06-17T10:49:02.847", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "742E05BA-773A-4EF3-822F-A4A7DED31A65", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}