SB2026091689 - Use-after-free in Linux kernel tcpm qcom driver
Published: September 16, 2026
Security Bulletin ID
SB2026091689
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-90027)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to compromise confidentiality, integrity, and availability.
The vulnerability exists due to use-after-free in the Qualcomm PMIC Type-C port driver when delayed cc_debounce work executes after pmic_typec_port resources are freed. A local user can trigger port shutdown while delayed cc_debounce work is pending to compromise confidentiality, integrity, and availability.
Remediation
Install update from vendor's website.