Messages in this thread | | | Date | Wed, 2 Jan 2008 09:37:19 -0500 | From | Rik van Riel <> | Subject | Re: [PATCH] restrict reading from /proc/<pid>/maps to those who share ->mm or can ptrace pid |
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On Wed, 2 Jan 2008 14:09:57 +0000 Al Viro <viro@ZenIV.linux.org.uk> wrote:
> Contents of /proc/*/maps is sensitive and may become sensitive > after open() (e.g. if target originally shares our ->mm and later > does exec on suid-root binary). > Check at read() (actually, ->start() of iterator) time that > mm_struct we'd grabbed and locked is > * still the ->mm of target > * equal to reader's ->mm or the target is ptracable by reader. > > Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Rik van Riel <riel@redhat.com>
-- All rights reversed.
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