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Vulnerability of Linux kernel: use after free via hci_sock_bound_ioctl

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via hci_sock_bound_ioctl() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Fedora, Linux.
Severity of this weakness: 2/4.
Creation date: 08/06/2021.
Références of this bulletin: CVE-2021-3573, FEDORA-2021-bc2a819bc5, FEDORA-2021-db2bb87f35, VIGILANCE-VUL-35640.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via hci_sock_bound_ioctl(...
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This vulnerability alert impacts software or systems such as Fedora, Linux.

Our Vigil@nce team determined that the severity of this computer weakness alert is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this computer vulnerability.

Solutions for this threat 

Solutions, fixes, patches and workarounds for this vulnerability are not yet public.
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