Bug 1964139 (CVE-2021-3564) - CVE-2021-3564 kernel: double free in bluetooth subsystem when the HCI device initialization fails
Summary: CVE-2021-3564 kernel: double free in bluetooth subsystem when the HCI device ...
Status: NEW
Alias: CVE-2021-3564
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1964556 1964557 1964559 1964560 1964782 1964783 1964784 1964785 1964449 1964558 1967263
Blocks: 1962167 1964142
TreeView+ depends on / blocked
Reported: 2021-05-24 19:31 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-09-15 05:46 UTC (History)
43 users (show)

Fixed In Version:
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Doc Text:
A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system.
Clone Of:
Last Closed:

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Description Guilherme de Almeida Suckevicz 2021-05-24 19:31:59 UTC
A flaw was found in the Linux kernel in the BlueTooth subsystem when the HCI device initialization fails. It can lead to unexpected results, like double-free memory corruption vulnerability.

Comment 1 Guilherme de Almeida Suckevicz 2021-05-25 13:51:58 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1964449]

Comment 17 Justin M. Forbes 2021-06-29 16:23:32 UTC
This was fixed for Fedora with the 5.12.10 stable kernel updates.

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