Bug 1549841 (CVE-2018-7548) - CVE-2018-7548 zsh: null-pointer deref when using ${(PA)...} on an empty array result
Summary: CVE-2018-7548 zsh: null-pointer deref when using ${(PA)...} on an empty array...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-7548
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1549842 1549843
Blocks: 1549839
TreeView+ depends on / blocked
 
Reported: 2018-02-27 21:18 UTC by Laura Pardo
Modified: 2019-09-29 14:33 UTC (History)
5 users (show)

Fixed In Version: zsh 5.5
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 03:41:51 UTC


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Description Laura Pardo 2018-02-27 21:18:08 UTC
A flaw was found in zsh prior 5.4.2. There is a null-pointer deref when using ${(PA)...} on an empty array result.


References:
https://sourceforge.net/p/zsh/code/ci/110b13e1090bc31ac1352b28adc2d02b6d25a102

Comment 1 Laura Pardo 2018-02-27 21:18:50 UTC
Created zsh tracking bugs for this issue:

Affects: fedora-all [bug 1549842]

Comment 3 Kamil Dudka 2018-03-06 14:02:20 UTC
(In reply to Laura Pardo from comment #0)
> A flaw was found in zsh prior 5.4.2

The commit you refer to landed _after_ the 5.4.2 release of zsh and it has not been included in any stable release of zsh yet.


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