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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25620] Signed comparison vulnerability in the ARMv7
 memcpy() (CVE-2020-6096)
Date: Wed, 08 Jul 2020 12:22:20 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D25620

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
            Version|2.3.1                       |2.32

--- Comment #27 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.32 with:

commit beea361050728138b82c57dda0c4810402d342b9
Author: Alexander Anisimov <a.anisimov@omprussia.ru>
Date:   Wed Jul 8 14:18:31 2020 +0200

    arm: CVE-2020-6096: Fix multiarch memcpy for negative length [BZ #25620]

    Unsigned branch instructions could be used for r2 to fix the wrong
    behavior when a negative length is passed to memcpy.
    This commit fixes the armv7 version.

commit 79a4fa341b8a89cb03f84564fd72abaa1a2db394
Author: Evgeny Eremin <e.eremin@omprussia.ru>
Date:   Wed Jul 8 14:18:19 2020 +0200

    arm: CVE-2020-6096: fix memcpy and memmove for negative length [BZ #256=
20]

    Unsigned branch instructions could be used for r2 to fix the wrong
    behavior when a negative length is passed to memcpy and memmove.
    This commit fixes the generic arm implementation of memcpy amd memmove.

--=20
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