CVE-2026-23030 phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()
A double free bug in the Rockchip USB2 PHY driver allows local attackers to cause a denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23030?
CVE-2026-23030 is an use after free vulnerability in Linux, published on 31 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()
The for_each_available_child_of_node() calls of_node_put() to release child_np in each success loop. After breaking from the loop with the child_np has been released, the code will jump to the put_child label and will call the of_node_put() again if the devm_request_threaded_irq() fails. These cause a double free bug.
Fix by returning directly to avoid the duplicate of_node_put().
Which versions are affected by CVE-2026-23030?
How do I fix CVE-2026-23030?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-23030 being exploited?
There is no known exploitation of CVE-2026-23030 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-23030, DEBIAN-CVE-2026-23030, GHSA-p937-325h-2j2f, ROOT-OS-DEBIAN-12-CVE-2026-23030, ROOT-OS-DEBIAN-13-CVE-2026-23030, ROOT-OS-UBUNTU-2404-CVE-2026-23030 and 1 more.