CVE-2026-23096 uacce: fix cdev handling in the cleanup path

What is CVE-2026-23096?

CVE-2026-23096 is a medium-severity vulnerability in Linux kernel, published on 4 Feb 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:

uacce: fix cdev handling in the cleanup path

When cdev_device_add fails, it internally releases the cdev memory, and if cdev_device_del is then executed, it will cause a hang error. To fix it, we check the return value of cdev_device_add() and clear uacce->cdev to avoid calling cdev_device_del in the uacce_remove.

Which versions are affected by CVE-2026-23096?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23096?

Apply the vendor's patch.

Is CVE-2026-23096 being exploited?

There is no known exploitation of CVE-2026-23096 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-23096, DEBIAN-CVE-2026-23096, GHSA-4975-8xmf-m3v3, ROOT-OS-UBUNTU-2204-CVE-2026-23096, ROOT-OS-UBUNTU-2404-CVE-2026-23096, UBUNTU-CVE-2026-23096.