SB2026091843 - Race condition in Linux kernel dma xilinx driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-93169)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to trigger a race condition between runtime power management and device removal.

The vulnerability exists due to improper synchronization in zynqmp_dma_remove() in the ZynqMP DMA driver when removing or unbinding a device while runtime power management transitions occur. A local privileged user can remove or unbind the device during runtime power management activity to trigger a race condition between runtime power management and device removal.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/32f69e6c95b59f9cfc649ebf352a204d23ba93d7
• https://git.kernel.org/stable/c/516ba2d8b7aac4238f9fcbd58579c43c71b9b695
• https://git.kernel.org/stable/c/aec7cf9a5bd89047c58d5648bfce0b1bd19ba7d5