This bug was fixed in the package linux - 5.4.0-21.25
---------------
linux (5.4.0-21.25) focal; urgency=medium
* CVE-2020-8835
- SAUCE: bpf: undo incorrect __reg_bound_offset32 handling
-- Thadeu Lima de Souza Cascardo <[email protected]> Thu, 26 Mar
2020 17:51:28 -0300
** Changed in: linux (Ubuntu Focal)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-8835
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https://bugs.launchpad.net/bugs/1836030
Title:
enable realtek ethernet device ASPM function
Status in HWE Next:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-osp1 package in Ubuntu:
Fix Released
Status in linux-oem-osp1 source package in Bionic:
Fix Released
Status in linux source package in Focal:
Fix Released
Bug description:
============= SRU for 5.4 Focal kernel ===============
[Impact]
The PC state stays at PC3 if r8169 driver doesn't enable ASPM.
[Fix]
Applied same series of patches from v5.5-rc1 and disable ASPM L1.1 only,
instead of disable ASPM completely.
[Test]
Verified on machines with realtek Ethernet device, the Ethernet works well
after S3 test 30 times and the system can enter PC10.
[Regression Potential]
Low, from realtek engineer, r8169 driver supports ASPM L0s and L1, and we
only disable ASPM L1.1 which is pretty safe and should be disabled by default.
================== SRU for 5.0 OEM OSP1 kernel =========================
[Impact]
The PC state stays at PC3 if realtek ethernet doesn't enable ASPM.
[Fix]
Discussed with upstream and they would like to use sysfs to toggle the ASPM
link states, but the patches didn't get merged yet, so we merger them as SAUCE
patches.
[Test]
Verified on machines with realtek ethernet device, the ethernet works well
and the system can enter PC10.
[Regression Potential]
High. From upstream maintainer, enable realtek ethernet ASPM may lead to some
serious issue, so regression is expected. Those regression should come from old
realtek chips, we'll make sure all new platforms with realtek NIC have no any
issues.
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