CVE-2026-46142

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn).

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/33c5bb50b9c40e8451e6aec4487a31d794b98d92	Patch
https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d	Patch
https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562	Patch
https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707	Patch
https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0	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::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.18:-::::::
	cpe:2.3:o:linux:linux_kernel:6.18:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.18:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.18:rc7::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-06-24 17:07

NVD link : CVE-2026-46142

Mitre link : CVE-2026-46142

CVE.ORG link : CVE-2026-46142

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-46142", "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": "d4187ec2641061748480cdc944fd07653fad50d5", "lessThan": "d3bd8040497968f6f5470018724ef7b0df92f707", "versionType": "git"}, {"status": "affected", "version": "f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e", "lessThan": "f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0", "versionType": "git"}, {"status": "affected", "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973", "lessThan": "33c5bb50b9c40e8451e6aec4487a31d794b98d92", "versionType": "git"}, {"status": "affected", "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973", "lessThan": "68a007a701bc06fa426507c551ef12514f2e721d", "versionType": "git"}, {"status": "affected", "version": "a04ea57aae375bdda1cb57034d8bcbb351e1f973", "lessThan": "694de316f607fe2473d52ca0707e3918e72c1562", "versionType": "git"}, {"status": "affected", "version": "93e52b75f11a8f39b22993ae315b5b9a6b2668a3", "versionType": "git"}, {"status": "affected", "version": "6.6.117", "lessThan": "6.6.140", "versionType": "semver"}, {"status": "affected", "version": "6.12.58", "lessThan": "6.12.88", "versionType": "semver"}, {"status": "affected", "version": "6.17.8", "lessThan": "6.18", "versionType": "semver"}], "programFiles": ["drivers/net/ethernet/wangxun/libwx/wx_hw.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"status": "unaffected", "version": "0", "lessThan": "6.18", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.140", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.88", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.30", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.7", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/wangxun/libwx/wx_hw.c"], "defaultStatus": "affected"}]}], "published": "2026-05-28T10:16:29.790", "references": [{"url": "https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: libwx: fix VF illegal register access\n\nRegister WX_CFG_PORT_ST is a PF restricted register. When a VF is\ninitialized, attempting to read this register triggers an illegal\nregister access, which lead to a system hang.\n\nWhen the device is VF, the bus function ID can be obtained directly from\nthe PCI_FUNC(pdev->devfn)."}], "lastModified": "2026-06-24T17:07:50.287", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F383A2C1-6444-4D5F-AC88-11F57C67C624", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.6.117"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F903A5AC-BF29-4FC6-89A5-C37D434AC69C", "versionEndExcluding": "6.12.88", "versionStartIncluding": "6.12.58"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "57D56998-E0C3-4F58-BBF0-B20D1B4322C8", "versionEndExcluding": "6.18", "versionStartIncluding": "6.17.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F39F06A9-4AEA-437A-A2C4-79F93464CA8D", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.18.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DCE57113-2223-4308-A0F2-5E6ECFBB3C23"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2545FB83-C4A6-4F62-9ED1-09F75D2E3C78"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E955EC5D-4684-4B5D-AE4D-F2BF9ADDBA1D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38C4D89F-9A13-4D29-8645-C9785C142C07"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}