Use After Free Affecting kernel-default package, versions <6.4.0-150700.53.81.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.69% (51st percentile)

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  • Snyk IDSNYK-SLES157-KERNELDEFAULT-19909785
  • published18 Sept 2026
  • disclosed17 Sept 2026

Introduced: 17 Sep 2026

NewCVE-2026-64303  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-default to version 6.4.0-150700.53.81.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default package and not the kernel-default package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1