CVE-2026-93170

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-93170

Key Details

CVE	CVE-2026-93170
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

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:

dmaengine: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers

Fix a race condition in AXIDMA and MCDMA irq handlers where the channel

could be incorrectly marked as idle and attempt spurious transfers when

descriptors are still being processed.

The issue occurs when:

1. Multiple descriptors are queued and active.

2. An interrupt fires after completing some descriptors.

3. xilinx_dma_complete_descriptor() moves completed descriptors to

done_list.

4. Channel is marked idle and start_transfer() is called even though

active_list still contains unprocessed descriptors.

5. This leads to premature transfer attempts and potential descriptor

corruption or missed completions.

Only mark the channel as idle and start new transfers when the active list

is actually empty, ensuring proper channel state management and avoiding

spurious transfer attempts. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-93170
CVE	https://www.cve.org/CVERecord?id=CVE-2026-93170

Source

Reference

NVD

CVE