CVE-2026-64303

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-64303

Key Details

CVE	CVE-2026-64303
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

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

When dmaengine_prep_slave_sg() fails for the TX channel, the error path

terminates the TX DMA channel but leaves the RX channel running. Since

the RX channel was already submitted and issued prior to preparing

the TX descriptor, returning -EINVAL causes the SPI core to unmap the

DMA buffers while the RX DMA engine continues writing to them, leading

to potential memory corruption or use-after-free.

Terminate the RX channel before returning on the TX prepare failure path. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-64303
CVE	https://www.cve.org/CVERecord?id=CVE-2026-64303

Source

Reference

NVD

CVE