Linux 5.9.1 + 6 Other Stable Kernels Out For Addressing "Bleeding Tooth" Vulnerability

Written by Michael Larabel in Linux Security on 18 October 2020 at 12:45 AM EDT. 7 Comments
One week past the Linux 5.9 official debut, Linux 5.9.1 is now available. Making this initial point release a bit more noteworthy is including the fixes for the "Bleeding Tooth" Bluetooth vulnerability made public this week.

BleedingTooth is a remote code execution vulnerability affecting Linux that stems from a heap-based type confusion in the L2CAP code. But in all it's not as pressing as some other vulnerabilities since it first of all relies upon the attacker being within Bluetooth range of vulnerable systems and relies upon some intricate details before an attacker can send a rogue L2CAP packet to cause a remote code execution within the BlueZ Bluetooth stack.

BleedingTooth is now addressed by Bluetooth fixes in the kernel code for Linux 5.9.1. So 5.9.1 is out with those Bluetooth fixes plus some other mostly mundane fixes.

For those on older supported stable series, 5.8.16, 5.4.72, 4.19.152, 4.14.202, 4.9.240, and 4.4.240 are all available with the Bluetooth fixes and more.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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