News: 0000834297

BleedingTooth: critical kernel Bluetooth vulnerability

([Security] Oct 14, 2020 17:00 UTC (Wed) (jake))

Reference: 0000834297
News link: https://lwn.net/Articles/834297
Source link:

Several flaws in the [1]BlueZ kernel Bluetooth stack prior to Linux 5.9 are being reported [2]by Intel and by Google ( [3]GHSA-h637-c88j-47wq , [4]GHSA-7mh3-gq28-gfrq , and [5]GHSA-ccx2-w2r4-x649 ). They are collectively being called "BleedingTooth", and more information [6]will be forthcoming , though there is already a [7]YouTube video demonstrating remote code execution using BleedingTooth.

[1] http://www.bluez.org/

[2] https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00435.html

[3] https://github.com/google/security-research/security/advisories/GHSA-h637-c88j-47wq

[4] https://github.com/google/security-research/security/advisories/GHSA-7mh3-gq28-gfrq

[5] https://github.com/google/security-research/security/advisories/GHSA-ccx2-w2r4-x649

[6] https://twitter.com/theflow0/status/1316071793707364353

[7] https://www.youtube.com/watch?v=qPYrLRausSw

BleedingTooth: critical kernel Bluetooth vulnerability

None of these patches are in 5.8.15 or any other recent stable kernel and I can't find them mentioned anywhere in stable@vger.k.o. Who do we need to ping to make them go to stable?

BleedingTooth: critical kernel Bluetooth vulnerability

None of these patches are in 5.8.15 or any other recent stable kernel and I can't find them mentioned anywhere in stable@vger.k.o. Who do we need to ping to make them go to stable?

BleedingTooth: critical kernel Bluetooth vulnerability

I just informed Greg KH privately about it. He was not made aware of these issues prior to now. What's up with Intel and Google's security disclosure process ?

BleedingTooth: critical kernel Bluetooth vulnerability

I just informed Greg KH privately about it. He was not made aware of these issues prior to now. What's up with Intel and Google's security disclosure process ?

BleedingTooth: critical kernel Bluetooth vulnerability

Actually, looking at Linus' master branch (and v5.9), only

commit a2ec905d1e16 ("Bluetooth: fix kernel oops in store_pending_adv_report") appears to have reached upstream.

All fixes from Intel don't even appear in master, even less in v5.9:

[1]https://lore.kernel.org/linux-bluetooth/20200806181714.32...

[2]https://lore.kernel.org/linux-bluetooth/20200806181714.32...

[3]https://lore.kernel.org/linux-bluetooth/20200806181714.32...

[4]https://lore.kernel.org/linux-bluetooth/20200806181714.32...

It appears that Intel's security advisory is wrong when saying "Intel recommends updating the Linux kernel to version 5.9 or later."

[1] https://lore.kernel.org/linux-bluetooth/20200806181714.3216076-1-luiz.dentz@gmail.com/

[2] https://lore.kernel.org/linux-bluetooth/20200806181714.3216076-2-luiz.dentz@gmail.com/

[3] https://lore.kernel.org/linux-bluetooth/20200806181714.3216076-3-luiz.dentz@gmail.com/

[4] https://lore.kernel.org/linux-bluetooth/20200806181714.3216076-4-luiz.dentz@gmail.com/