Double free in Linux kernel - CVE-2026-90288
Published: September 18, 2026
Vulnerability identifier: #VU151199
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90288
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a double free.
The vulnerability exists due to improper device tree node reference management in the Renesas R-Car Gen2 PHY driver's rcar_gen2_phy_probe function when handling a PHY creation failure. A local user can trigger the PHY creation failure to trigger a double free.
Affected software
Linux kernel
How to mitigate CVE-2026-90288
Install security update from vendor's repository.