CVE-2026-90288 Linux kernel phy renesas rcar-gen2 - Use After Free

Linux kernel phy renesas rcar-gen2 contains a double free vulnerability caused by redundant of_node_put call on phy creation failure, letting kernel processes cause memory corruption, exploit requires kernel code execution.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.15% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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