Dan Rosenberg 982f7c2b2e sys_semctl: fix kernel stack leakage ... The semctl syscall has several code paths that lead to the leakage of uninitialized kernel stack memory (namely the IPC_INFO, SEM_INFO, IPC_STAT, and SEM_STAT commands) during the use of the older, obsolete version of the semid_ds struct. The copy_semid_to_user() function declares a semid_ds struct on the stack and copies it back to the user without initializing or zeroing the "sem_base", "sem_pending", "sem_pending_last", and "undo" pointers, allowing the leakage of 16 bytes of kernel stack memory. The code is still reachable on 32-bit systems - when calling semctl() newer glibc's automatically OR the IPC command with the IPC_64 flag, but invoking the syscall directly allows users to use the older versions of the struct. Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-10-01 10:50:58 -07:00
..
compat.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
compat_mq.c
ipc_sysctl.c
ipcns_notifier.c
Makefile	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
mq_sysctl.c
mqueue.c	switch mqueue to ->evict_inode()	2010-08-09 16:47:58 -04:00
msg.c	kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN	2010-05-25 08:07:02 -07:00
msgutil.c
namespace.c
sem.c	sys_semctl: fix kernel stack leakage	2010-10-01 10:50:58 -07:00
shm.c	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
syscall.c	ppc64 sys_ipc breakage in 2.6.34-rc2	2010-03-22 09:57:19 -07:00
util.c	kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN	2010-05-25 08:07:02 -07:00
util.h