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Serge E. Hallyn 626ac545c1 user namespace: fix copy_user_ns return value 
When a CONFIG_USER_NS=n and a user tries to unshare some namespace other
than the user namespace, the dummy copy_user_ns returns NULL rather than
the old_ns.

This value then gets assigned to task->nsproxy->user_ns, so that a
subsequent setuid, which uses task->nsproxy->user_ns, causes a NULL
pointer deref.

Fix this by returning old_ns.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 14:05:08 -07:00
..
acpi
asm-alpha arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-arm arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-arm26 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-avr32 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-blackfin fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
asm-cris arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-frv arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-generic i386: Put allocated ELF notes in read-only data segment 2007-07-19 10:04:47 -07:00
asm-h8300 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-i386 lguest: the host code 2007-07-19 10:04:52 -07:00
asm-ia64 coredump masking: reimplementation of dumpable using two flags 2007-07-19 10:04:46 -07:00
asm-m32r arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-m68k arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-m68knommu m68knommu: remove is_in_rom() function 2007-07-19 10:04:51 -07:00
asm-mips arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-parisc arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-powerpc arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-ppc mm: remove ptep_test_and_clear_dirty and ptep_clear_flush_dirty 2007-07-17 10:22:59 -07:00
asm-s390 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-sh arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-sh64 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-sparc arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-sparc64 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-um arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-v850 fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
asm-x86_64 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
asm-xtensa arch: personality independent stack top 2007-07-19 10:04:45 -07:00
crypto
keys
linux user namespace: fix copy_user_ns return value 2007-07-19 14:05:08 -07:00
math-emu
media V4L/DVB (5835): saa7146/dvb-ttpci: Fix signedness warnings (gcc 4.1.1, kernel 2.6.22) 2007-07-18 14:24:44 -03:00
mtd UBI: kill homegrown endian macros 2007-07-18 16:53:49 +03:00
net [GENETLINK]: Dynamic multicast groups. 2007-07-18 15:47:52 -07:00
pcmcia PCMCIA-NETDEV : add new ID of lan&modem multifunction card 2007-07-08 22:16:39 -04:00
rdma IB/cm: Include HCA ACK delay in local ACK timeout 2007-07-10 21:50:05 -07:00
rxrpc
scsi [SCSI] Remove unused method scsi_device_cancel 2007-07-14 16:01:16 -05:00
sound
video tgafb: actually allocate memory for the pseudo_palette 2007-07-17 10:23:12 -07:00
xen xen: Place vcpu_info structure into per-cpu memory 2007-07-18 08:47:45 -07:00
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