Use-after-free in Linux kernel - CVE-2026-90027
Published: September 16, 2026
Vulnerability identifier: #VU150264
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90027
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-90027
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3