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sr #109675: bash can be made to read uninitialized memory

Submitter:  None
Submitted:  Fri 03 May 2019 10:32:04 AM UTC
Category:  None Priority:  5 - Normal
Severity:  3 - Normal Status:  Done
Privacy:  Public Assigned to:  None
Originator Email:  -email is unavailable- Open/Closed:  Open
Operating System:  GNU/Linux
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Mon 13 May 2019 02:12:27 PM UTC, comment #1: 

This has been fixed in bash-5.0.

Chet Ramey <chet>
Project Administrator
Fri 03 May 2019 10:32:04 AM UTC, original submission:  

"declare -A" via nameref from within a function can fail with an error that suggests uninitialized memory is being read. The garbled identifier is a different short binary string on each run.

bash -c 'foo() { declare -n bar=baz; declare -A bar; bar[x]=y; }; foo'
environment: line 0: `�d�K�U': not a valid identifier

Tested on 4.18



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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-05-13 chet StatusNone Done

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