This bug was fixed in the package linux - 5.4.0-37.41
---------------
linux (5.4.0-37.41) focal; urgency=medium
* CVE-2020-0543
- SAUCE: x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2
- SAUCE: x86/cpu: Add a steppings field to struct x86_cpu_id
- SAUCE: x86/cpu: Add 'table' argument to cpu_matches()
- SAUCE: x86/speculation: Add Special Register Buffer Data Sampling (SRBDS)
mitigation
- SAUCE: x86/speculation: Add SRBDS vulnerability and mitigation
documentation
- SAUCE: x86/speculation: Add Ivy Bridge to affected list
-- Marcelo Henrique Cerri <marcelo.ce...@canonical.com> Wed, 03 Jun
2020 11:24:23 -0300
** Changed in: linux (Ubuntu Focal)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-0543
** Changed in: linux (Ubuntu Eoan)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-12114
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https://bugs.launchpad.net/bugs/1874359
Title:
alsa/sof: kernel oops on the machine without Intel hdmi audio codec (a
regression in the asoc machine driver)
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem-5.6 package in Ubuntu:
Fix Released
Status in linux-oem-osp1 package in Ubuntu:
Confirmed
Status in linux-oem-osp1 source package in Bionic:
Fix Released
Status in linux source package in Eoan:
Fix Released
Status in linux source package in Focal:
Fix Released
Status in linux-oem-5.6 source package in Focal:
Fix Released
Bug description:
Please apply the fix for #1872569 first, then apply this patch.
[Impact]
The fix for #1872569 introduces a regression, the driver access a
NULL pointer on the machiens without Intel hdmi audio codec.
[Fix]
pick a fixing patch from alsa/asoc repo, the patch doesn't assume
the first rtd is for hda codec, it will look for that rtd through
strstr()
[Test Case]
Boot the kenrel on those 2 Dell and 2 Lenovo machines which uses
this driver, the audio could work. disable the intel hdmi audio codec
through bios, the analogue audio still works
[Regression Risk]
Low, I have tested this patch Lenovo / Dell machines, they all worked well.
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