Memory leak in Linux kernel - CVE-2026-90178
Published: September 19, 2026
Vulnerability identifier: #VU151309
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90178
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a memory leak.
The vulnerability exists due to improper resource release in the coretemp driver when removing a coretemp device on CPUs without package thermal support. A local privileged user can trigger coretemp device removal to cause a memory leak.
Affected software
Linux kernel
How to mitigate CVE-2026-90178
Install security update from vendor's repository.