SB2026091899 - Use of uninitialized resource in Linux kernel gadget function driver
Published: September 18, 2026
Security Bulletin ID
SB2026091899
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of uninitialized resource (CVE-ID: CVE-2026-93121)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause undefined behavior.
The vulnerability exists due to improper cleanup of an uninitialized dma_fence object in ffs_dmabuf_transfer() when handling an endpoint-disabled or request-allocation failure. A local user can initiate a DMA-buffer transfer that encounters either error condition to cause undefined behavior.
Remediation
Install update from vendor's website.