Bug 2436797 (CVE-2026-23096)

Summary: CVE-2026-23096 kernel: uacce: fix cdev handling in the cleanup path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2026-02-04 17:03:51 UTC 
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.
Comment 1 Jon Moroney 2026-02-04 22:28:37 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026020427-CVE-2026-23096-e5af@gregkh/T