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

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <216940050.616881292013292195.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
Date: Fri, 10 Dec 2010 15:34:52 -0500 (EST)
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Cc: coley@...us.mitre.org
Subject: Subject: CVE request: kernel:
 install_special_mapping skips security_file_mmap check

"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

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.