Messages in this thread | | | Date | Sat, 5 Jan 2008 01:31:09 -0800 | From | Andrew Morton <> | 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).
um, which contents?
> 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. >
Specifically, do /proc/pid/smaps and the maps4 goodies in -mm need similar treatment?
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