[UBUNTU 21.10] s390/cio: verify the driver availability for path_event call
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
High
|
Skipper Bug Screeners | ||
linux (Ubuntu) |
Fix Released
|
High
|
Krzysztof Kozlowski | ||
Impish |
Fix Released
|
High
|
Krzysztof Kozlowski | ||
Jammy |
Fix Released
|
High
|
Krzysztof Kozlowski |
Bug Description
Description: s390/cio: verify the driver availability for path_event call
Symptom: If no driver is attached to a device or the driver does not
Problem: There can be path-event generated for devices which are not
Solution: Make sure the driver is available before the callback.
Reproduction: -
Upstream-ID: dd9cb842fa9d906
Problem-ID: 196414
Distros: Ubuntu 21.10 and higher
Preventive: yes
Reported: -
SupportTicket: -
Reference: -
Date: 2022-02-14
Author: Vineeth Vijayan <email address hidden>
Component: kernel
CVE References
tags: | added: architecture-s39064 bugnameltc-196419 severity-medium targetmilestone-inin2110 |
Changed in ubuntu: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
affects: | ubuntu → linux (Ubuntu) |
Changed in ubuntu-z-systems: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
Changed in ubuntu-z-systems: | |
importance: | Undecided → High |
Changed in linux (Ubuntu Impish): | |
importance: | Undecided → High |
Changed in ubuntu-z-systems: | |
status: | New → In Progress |
Changed in linux (Ubuntu Impish): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-focal verification-done-impish removed: verification-needed-focal verification-needed-impish |
------- Comment From <email address hidden> 2022-02-14 20:28 EDT-------
The root-patch which has introduced the bug is from kernel 5.11.
Therefore, Ubuntu 21.10 and higher need to be fixed.
The fix is already available in stable now: /git.kernel. org/pub/ scm/linux/ kernel/ git/torvalds/ linux.git/ commit/ drivers/ s390?h= v5.17-rc4& id=dd9cb842fa9d 90653a9b48aba52 f89c069f3bc50
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