SB20260916121 - Type Confusion in Linux kernel dma
Published: September 16, 2026
Security Bulletin ID
SB20260916121
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Type Confusion (CVE-ID: CVE-2026-89995)
CWE-ID: CWE-843 - Type confusion
CVSSv4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to type confusion in dma_direct_alloc_from_pool() when dma_direct_alloc_pages() uses DMA coherent pool allocations. A remote attacker can trigger DMA page allocation through the affected path to compromise confidentiality, integrity, and availability.
Remediation
Install update from vendor's website.