Linux Distros Unpatched Vulnerability : CVE-2026-90254

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: hcisync: free the advertising instance on the failure and cancel paths advtimeoutexpire hands a kmalloced instance byte to hcicmdsyncqueue with a NU...

EUVD-2026-81847

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: free the advertising instance on the failure and cancel paths advtimeoutexpire hands a kmalloced instance byte to hcicmdsyncqueue with a NULL destroy callback, and only advtimeoutexpiresync frees it. That leak...

CVE-2026-90254

CVE-2026-90254 is a memory leak in the Linux kernel's Bluetooth HCI sync subsystem. The function adv_timeout_expire() passes a kmalloc()ed advertising instance byte to hci_cmd_sync_queue() with a NULL destroy callback , causing the buffer to leak on two paths: (1) when hci_cmd_sync_queue() fails ...

CVE-2026-90254: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: free the advertising instance on the failure and cancel paths advtimeoutexpire hands a kmalloced instance byte to hcicmdsyncqueue with a NULL destroy callback, and only advtimeoutexpiresync frees it. That leak...

CVE-2026-63944: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix UAF in hcilecreatecissync hcilecreatecissync dereferences conn-conntimeout after releasing both rcureadlock and hcidevlockhdev. The conn pointer was obtained from an RCU-protected iteration over...

EUVD-2023-59703

Malicious code in bioql PyPI...

CVE-2023-53017

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix memory leak in hciupdateadvdata When hcicmdsyncqueue failed in hciupdateadvdata, instptr is not freed, which will cause memory leak, convert to use ERRPTR/PTRERR to pass the instance to callback so no memo...

CVE-2022-49136 Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Fix queuing commands when HCIUNREGISTER is set hcicmdsyncqueue shall return an error if HCIUNREGISTER flag has been set as that means hciunregisterdev has been called so it will likely cause a uaf after the...