spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-42279
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-08-17 09:15:08 UTC
Updated2026-08-04 11:19:45 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer While transmitting with rx_len == 0, the RX FIFO is not going to be emptied in the interrupt handler. A subsequent transfer could then read crap from the previous transfer out of the RX FIFO into the start RX buffer. The core provides a register that will empty the RX and TX FIFOs, so do that before each transfer.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9ac8d17694b66d54b13e9718b25c14ca36dbebbd 3feda3677e8bbe833c3a62a4091377a08f015b80 git Not specified
CNA Linux Linux affected 9ac8d17694b66d54b13e9718b25c14ca36dbebbd 45e03d35229b680b79dfea1103a1f2f07d0b5d75 git Not specified
CNA Linux Linux affected 9ac8d17694b66d54b13e9718b25c14ca36dbebbd 9cf71eb0faef4bff01df4264841b8465382d7927 git Not specified
CNA Linux Linux affected 6.0 Not specified
CNA Linux Linux unaffected 6.0 semver Not specified
CNA Linux Linux unaffected 6.6.44 6.6.* semver Not specified
CNA Linux Linux unaffected 6.10.3 6.10.* semver Not specified
CNA Linux Linux unaffected 6.11 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9cf71eb0faef4bff01df4264841b8465382d7927 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3feda3677e8bbe833c3a62a4091377a08f015b80 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/45e03d35229b680b79dfea1103a1f2f07d0b5d75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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