SB2026091842 - Resource exhaustion in Linux kernel dma xilinx driver
Published: September 18, 2026
Security Bulletin ID
SB2026091842
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-93168)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper timeout calculation in xilinx_dma_poll_timeout in the Xilinx DMA driver when polling an unfulfilled DMA hardware condition with a zero delay. A local user can initiate a DMA operation under these conditions to cause a denial of service.
Remediation
Install update from vendor's website.