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Date:      Wed, 07 Aug 2019 07:26:47 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 239688] [patch] geom: uzip: Use mallocarray to prevent potential integer overflow
Message-ID:  <bug-239688-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239688

            Bug ID: 239688
           Summary: [patch] geom: uzip: Use mallocarray to prevent
                    potential integer overflow
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: hslester96@gmail.com

Created attachment 206322
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=206322&action=edit
g_uzip_zlib patch

The implementation of z_alloc() in g_uzip_zlib.c uses malloc() to allocate
resources without any check for the size.
This may lead to integer overflow.
It is better to use mallocarray() here to prevent such risk.

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