SB20260916106 - NULL pointer dereference in Linux kernel spi driver
Published: September 16, 2026
Security Bulletin ID
SB20260916106
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-90012)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 9.3 [CVSS:4.0/AV:N/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 cause a denial of service.
The vulnerability exists due to improper DMA mapping cleanup in __spi_map_msg() and spi_unmap_msg() when handling partial DMA mapping failures. A remote attacker can trigger a partial DMA mapping failure to cause a denial of service.
Remediation
Install update from vendor's website.