Use-after-free in Linux kernel - CVE-2026-97604
Published: September 28, 2026
Vulnerability identifier: #VU152597
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97604
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to a use-after-free in vfb colormap cleanup when a concurrent driver unbind occurs while FBIOGETCMAP copies a colormap to userspace. A local user can retain an open framebuffer file reference and invoke FBIOGETCMAP during a driver unbind to disclose sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2026-97604
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3