SB20260424236 - Use-after-free in Linux kernel spi driver
Published: April 24, 2026
Security Bulletin ID
SB20260424236
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) Use-after-free (CVE-ID: CVE-2026-31485)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the spi-fsl-lpspi driver when tearing down DMA channels during controller removal while a SPI transfer is running. A local user can trigger a concurrent SPI transfer to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300
- https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86
- https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e
- https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb
- https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc
- https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b
- https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3
- https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6