From: ludo@gnu.org (Ludovic Courtès)
To: guix-devel@gnu.org
Subject: Grafting limitation
Date: Tue, 17 Nov 2015 10:05:14 +0100 [thread overview]
Message-ID: <87fv059et1.fsf_-_@gnu.org> (raw)
In-Reply-To: <878u5ycoga.fsf@gnu.org> ("Ludovic \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\= \=\?utf-8\?Q\?s\?\= message of "Mon, 16 Nov 2015 09:56:21 +0100")
ludo@gnu.org (Ludovic Courtès) skribis:
> Leo Famulari <leo@famulari.name> skribis:
>
>> These buffer overflows in libpng were announced today:
>> https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8126
>>
>> This patch updates libpng to 1.5.24, which is claimed to be free of the bugs.
>
> In commit 1b076e6 on ‘master’, I made 1.5.24 a replacement for the
> current libpng (info "(guix) Security Updates")
As Mark rightfully reminded me, the grafting mechanism has a
shortcoming: it is not recursive.
IOW, if a package has a direct dependency on libpng, it is appropriately
grafted to refer to the new libpng. However, if a package depends on
libfoo, which in turn depends on libpng, then that package will keep
referring to the old libfoo, which refers to the vulnerable libpng.
I’ll see how ‘graft-derivation’ in (guix derivations) can be made
recursive.
Ludo’.
prev parent reply other threads:[~2015-11-17 9:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-15 0:12 [PATCH 0/1] libpng security update (CVE-2015-8126) Leo Famulari
2015-11-15 0:12 ` [PATCH 1/1] gnu: libpng: Add fixes for CVE-2015-8126 Leo Famulari
2015-11-16 8:56 ` [PATCH 0/1] libpng security update (CVE-2015-8126) Ludovic Courtès
2015-11-17 9:05 ` Ludovic Courtès [this message]
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