://bugs.launchpad.net/bugs/401950
Title:
mmap_min_addr should be handled via CAP_SYS_RAWIO
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https://bugs.launchpad.net/bugs/401950
Title:
mmap_min_addr should be handled via CAP_SYS_RAWIO
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mmap_min_addr should be handled via CAP_SYS_RAWIO
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I think CAP_SYS_RAWIO is the wrong way to handle this, actually. This
still leaves Wine able to use the 0 page, which is what needs to be
avoided.
** Changed in: dosemu (Ubuntu)
Status: New = Invalid
** Changed in: wine (Ubuntu)
Status: Triaged = Invalid
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mmap_min_addr should
On all the machines that have wine installed cat /proc/sys/vm/mmap_min_addr
returns 0.
Shouldn't this bug be marked as high or critical as this seems to be
exploitable?
http://www.h-online.com/security/news/item/Root-exploit-for-Linux-kernel-published-742541.html
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mmap_min_addr should be
** Bug watch added: Wine Bugzilla #19732
http://bugs.winehq.org/show_bug.cgi?id=19732
** Also affects: wine via
http://bugs.winehq.org/show_bug.cgi?id=19732
Importance: Unknown
Status: Unknown
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mmap_min_addr should be handled via CAP_SYS_RAWIO
** Changed in: wine
Status: Unknown = Confirmed
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mmap_min_addr should be handled via CAP_SYS_RAWIO
https://bugs.launchpad.net/bugs/401950
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Public bug reported:
Binary package hint: dosemu
I would like to see wine and dosemu using filesystem capabilties to
temporarily grant themselves CAP_SYS_RAWIO during start up to map the
memory below mmap_min_addr, instead of requiring that the entire running
system have their mmap_min_addr
** Changed in: wine (Ubuntu)
Importance: Undecided = Medium
** Changed in: wine (Ubuntu)
Status: New = Triaged
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mmap_min_addr should be handled via CAP_SYS_RAWIO
https://bugs.launchpad.net/bugs/401950
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Bugs, which
Implementing this would involve two halves: setting up the filesystem
capabilities when the package installed (postinst most likely), and
dropping the capability once the program had allocated memory.
Here is a quick example of how to mark an executable with a capability:
(sorry, lost some context for my setcap paste: low-mmap is the program
I was setting capabilities on. cap_sys_rawio is the textual version
of the capabilities.)
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mmap_min_addr should be handled via CAP_SYS_RAWIO
https://bugs.launchpad.net/bugs/401950
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