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  1. 27 May, 2011 1 commit
  3. 26 May, 2011 4 commits
  5. 24 May, 2011 3 commits
    • Dan Rosenberg's avatar
      net: convert %p usage to %pK · 71338aa7
      Dan Rosenberg authored 
      The %pK format specifier is designed to hide exposed kernel pointers,
specifically via /proc interfaces.  Exposing these pointers provides an
easy target for kernel write vulnerabilities, since they reveal the
locations of writable structures containing easily triggerable function
pointers.  The behavior of %pK depends on the kptr_restrict sysctl.

If kptr_restrict is set to 0, no deviation from the standard %p behavior
occurs.  If kptr_restrict is set to 1, the default, if the current user
(intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG
(currently in the LSM tree), kernel pointers using %pK are printed as 0's.
 If kptr_restrict is set to 2, kernel pointers using %pK are printed as
0's regardless of privileges.  Replacing with 0's was chosen over the
default "(null)", which cannot be parsed by userland %p, which expects
"(nil)".

The supporting code for kptr_restrict and %pK are currently in the -mm
tree.  This patch converts users of %p in net/ to %pK.  Cases of printing
pointers to the syslog are not covered, since this would eliminate useful
information for postmortem debugging and the reading of the syslog is
already optionally protected by the dmesg_restrict sysctl.
Signed-off-by: default avatarDan Rosenberg <drosenberg@vsecurity.com>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Graf <tgraf@infradead.org>
Cc: Eugene Teo <eugeneteo@kernel.org>
Cc: Kees Cook <kees.cook@canonical.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Eric Paris <eparis@parisplace.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      71338aa7
    • Mike Frysinger's avatar
      net/irda: convert bfin_sir to common Blackfin UART header · 229de618
      Mike Frysinger authored 
      No need to duplicate these defines now that the common Blackfin code has
unified these for all UART devices.
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      229de618
    • David S. Miller's avatar
      ipv6: Fix return of xfrm6_tunnel_rcv() · 6ac3f664
      David S. Miller authored 
      Like ipv4, just return xfrm6_rcv_spi()'s return value directly.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6ac3f664
  7. 23 May, 2011 32 commits
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