Vulnerability Description
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. This flaw affects all the Linux kernel versions starting from 3.13.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.13 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/05/25/1ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/06/01/2ExploitMailing List
- https://bugzilla.redhat.com/show_bug.cgi?id=1964139Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2021/05/25/1ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/25/1ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/06/01/2ExploitMailing List
- https://bugzilla.redhat.com/show_bug.cgi?id=1964139Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2021/05/25/1ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2021-3564?
CVE-2021-3564 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 cr...
How severe is CVE-2021-3564?
CVE-2021-3564 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3564?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Debian Debian Linux.