This bug was fixed in the package linux - 5.8.0-25.26
---------------
linux (5.8.0-25.26) groovy; urgency=medium
* groovy/linux: 5.8.0-25.26 -proposed tracker (LP: #1899940)
* CVE-2020-12351
- Bluetooth: L2CAP: Fix calling sk_filter on non-socket based channel
* CVE-2020-12352
- Bluetooth: A2MP: Fix not initializing all members
* CVE-2020-12351 // CVE-2020-12352 // CVE-2020-24490
- Bluetooth: Disable High Speed by default
- Bluetooth: MGMT: Fix not checking if BT_HS is enabled
- [Config] Disable BlueZ highspeed support
* ec2-hibinit-agent needs to properly initialize swap file (LP: #1892728)
- ext4: implement swap_activate aops using iomap
-- Andrea Righi <[email protected]> Thu, 15 Oct 2020 12:09:24
+0200
** Changed in: linux (Ubuntu Groovy)
Status: Confirmed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-12351
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-12352
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-24490
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https://bugs.launchpad.net/bugs/1899726
Title:
Fix system reboot when disconnecting WiFi
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Confirmed
Status in linux-oem-5.6 source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Fix Released
Status in linux-oem-5.6 source package in Groovy:
Invalid
Bug description:
[Impact]
Hardware triggrs reboot when disconnecting WiFi connection.
[Fix]
There's a DMA bug in Intel WiFi 9000 needs to be limits to 6 RX queue
max.
[Test]
With the patch applied, a 1000 times of connect/disconnect loop doesn't
bring the system down.
[Regression Potential]
Not that I can think of. Hypothetically reducing RX queue rings will
reduce the RX speed, but the wireless transfter is a lot slower then DMA
operation, so we won't see any difference.
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