oss-security - Re: Subject: CVE request: kernel: install_special_mapping skips security_file

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Message-ID: <1795978644.998521292013527646.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Fri, 10 Dec 2010 15:38:47 -0500 (EST)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com, Petr Matousek <pmatouse@...hat.com>
Cc: coley@...us.mitre.org
Subject: Re: Subject: CVE request: kernel:
 install_special_mapping skips security_file_mmap check

Please use CVE-2010-4346

Thanks.

-- 
    JB


----- "Petr Matousek" <pmatouse@...hat.com> wrote:

> "The install_special_mapping routine (used, for example, to setup the
> vdso)
> skips the security check before insert_vm_struct, allowing a local
> attacker to
> bypass the mmap_min_addr security restriction by limiting the
> available pages
> for special mappings."
> 
> Credit: Tavis Ormandi
> 
> Reference:
> https://lkml.org/lkml/2010/12/9/222
> https://bugzilla.redhat.com/show_bug.cgi?id=662189
> 
> Thanks,
> --
> Petr Matousek / Red Hat Security Response Team

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