CVE-2026-64303: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path

highCVSS 7.1CVE-2026-64303

CSIRTS triage

product: spiOther

What: The RX channel may not terminate correctly on TX prepare failure.
Who is affected: Deployments using the fsl-lpspi driver are affected.
Urgency: Remediation urgency is unknown as the severity is not specified.
Action: Monitor for updates regarding this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64303

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-643030.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64303	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

criticalCVE-2026-64303: In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate …nvd

Recent advisories for spi

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-64367: In the Linux kernel, the following vulnerability has been resolved: HID: hid-goodix-spi: valid…nvd · 2026-07-25
criticalCVE-2026-64303: In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate …nvd · 2026-07-25
highCVE-2026-64221: In the Linux kernel, the following vulnerability has been resolved: spi: ti-qspi: fix use-afte…nvd · 2026-07-24
lowCVE-2026-10679: The DesignWare SPI driver (drivers/spi/spi_dw.c) computed the SPI BAUDR clock divider as info-…nvd · 2026-07-21
unknownCVE-2026-64170: In the Linux kernel, the following vulnerability has been resolved: spi: qup: fix error pointe…nvd · 2026-07-19
unknownCVE-2026-64169: In the Linux kernel, the following vulnerability has been resolved: spi: ep93xx: fix error poi…nvd · 2026-07-19