Bug 618274
| Summary: | bad susbstitution can crash mksh | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Michal Hlavinka <mhlavink> | ||||
| Component: | mksh | Assignee: | Michal Hlavinka <mhlavink> | ||||
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE - Apps <qe-baseos-apps> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 6.1 | CC: | fnadge, mfranc, ovasik | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: |
bad substitution could crash mksh. The code that made mksh crash is not expected to work under mksh, but it's expected to work under ksh93 so it could crash mksh if someone tried to run ksh script for newer ksh specification (ksh-93 vs. ksh-88). This was fixed and updated mksh no longer crashes, but reports error as expected
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Story Points: | --- | ||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-05-19 13:13:47 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Please be so kind and add a few key words to the technical note of this bugzilla entry using the following structure: Cause: Consequence: Fix: Result: For details, see: https://bugzilla.redhat.com/page.cgi?id=fields.html#cf_release_notes Thanks
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
Cause
What actions or circumstances cause this bug to present.
Consequence
What happens when the bug presents.
Fix
What was done to fix the bug.
Result
What now happens when the actions or circumstances above occur.
Note: this is not the same as the bug doesn’t present anymore.
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1,9 +1 @@
-Cause
+bad substitution could crash mksh. The code that made mksh crash is not expected to work under mksh, but it's expected to work under ksh93 so it could crash mksh if someone tried to run ksh script for newer ksh specification (ksh-93 vs. ksh-88). This was fixed and updated mksh no longer crashes, but reports error as expected- What actions or circumstances cause this bug to present.
-Consequence
- What happens when the bug presents.
-Fix
- What was done to fix the bug.
-Result
- What now happens when the actions or circumstances above occur.
- Note: this is not the same as the bug doesn’t present anymore.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0580.html |
Created attachment 434437 [details] patch to fix this Description of problem: bad substitution can crash mksh, the code that makes mksh crashe is not expected to work under mksh, but it's expected to work under ksh93 so it can crash mksh if someone tries to run ksh script for newer ksh specification (ksh93 vs. ksh88) Version-Release number of selected component (if applicable): How reproducible: always Steps to Reproduce: 1. echo ${x[@]:2} 2. 3. Actual results: crash Expected results: error message, no crash Additional info: