CVE-2026-46192

In the Linux kernel, the following vulnerability has been resolved: spi: microchip-core-qspi: don't attempt to transmit during emulated read-only dual/quad operations The core will deal with reads by creating clock cycles itself, there's no need to generate clock cycles by transmitting garbage data at the driver level. Further, transmitting garbage data just bricks the transfer since QSPI doesn't have a dedicated master-out line like MOSI in regular SPI. I'm not entirely sure if the transfer is bricked because of the garbage data being transmitted on the bus or because the core loses track of whether it is supposed to be sending or receiving data.

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/67184f361ab4d9fac6d2b8d5fed6649d496038a4	Patch
https://git.kernel.org/stable/c/eb56deaabf127e8985fc91fa6c97bf8a3b062844	Patch
https://git.kernel.org/stable/c/ec9d0ddbde6003c303fa5e1d5cd48952852984d8	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:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-06-17 10:53

NVD link : CVE-2026-46192

Mitre link : CVE-2026-46192

CVE.ORG link : CVE-2026-46192

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-46192", "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": "8f9cf02c8852837923f1cdacfcc92e138513325c", "lessThan": "ec9d0ddbde6003c303fa5e1d5cd48952852984d8", "versionType": "git"}, {"status": "affected", "version": "8f9cf02c8852837923f1cdacfcc92e138513325c", "lessThan": "67184f361ab4d9fac6d2b8d5fed6649d496038a4", "versionType": "git"}, {"status": "affected", "version": "8f9cf02c8852837923f1cdacfcc92e138513325c", "lessThan": "eb56deaabf127e8985fc91fa6c97bf8a3b062844", "versionType": "git"}], "programFiles": ["drivers/spi/spi-microchip-core-qspi.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": "6.18.30", "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/spi/spi-microchip-core-qspi.c"], "defaultStatus": "affected"}]}], "published": "2026-05-28T10:16:34.837", "references": [{"url": "https://git.kernel.org/stable/c/67184f361ab4d9fac6d2b8d5fed6649d496038a4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eb56deaabf127e8985fc91fa6c97bf8a3b062844", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ec9d0ddbde6003c303fa5e1d5cd48952852984d8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "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\nspi: microchip-core-qspi: don't attempt to transmit during emulated read-only dual/quad operations\n\nThe core will deal with reads by creating clock cycles itself, there's\nno need to generate clock cycles by transmitting garbage data at the\ndriver level. Further, transmitting garbage data just bricks the transfer\nsince QSPI doesn't have a dedicated master-out line like MOSI in regular\nSPI. I'm not entirely sure if the transfer is bricked because of the\ngarbage data being transmitted on the bus or because the core loses\ntrack of whether it is supposed to be sending or receiving data."}], "lastModified": "2026-06-17T10:53:15.030", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0382719F-0247-436A-881F-C7382FD213E6", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.17"}, {"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: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"}