packages: kernel/kernel.spec, kernel/kernel-CVE-2010-3081.patch (NEW) - rel...
baggins
baggins at pld-linux.org
Mon Sep 20 11:17:49 CEST 2010
Author: baggins Date: Mon Sep 20 09:17:49 2010 GMT
Module: packages Tag: HEAD
---- Log message:
- rel 2
- fix local root on 64bit kernels
---- Files affected:
packages/kernel:
kernel.spec (1.818 -> 1.819) , kernel-CVE-2010-3081.patch (NONE -> 1.1) (NEW)
---- Diffs:
================================================================
Index: packages/kernel/kernel.spec
diff -u packages/kernel/kernel.spec:1.818 packages/kernel/kernel.spec:1.819
--- packages/kernel/kernel.spec:1.818 Sun Sep 19 20:36:12 2010
+++ packages/kernel/kernel.spec Mon Sep 20 11:17:43 2010
@@ -115,7 +115,7 @@
%define basever 2.6.35
%define postver .4
-%define rel 1
+%define rel 2
%define _enable_debug_packages 0
@@ -313,6 +313,7 @@
Patch2000: kernel-small_fixes.patch
Patch2001: kernel-pwc-uncompress.patch
Patch2003: kernel-regressions.patch
+Patch2004: kernel-CVE-2010-3081.patch
# kill some thousands of warnings
# (only warnings, so just remove parts of this patch if conflics)
@@ -856,6 +857,7 @@
%patch2000 -p1
%patch2001 -p1
#%patch2003 -p1
+%patch2004 -p1
# Fix EXTRAVERSION in main Makefile
sed -i 's#EXTRAVERSION =.*#EXTRAVERSION = %{postver}%{?alt_kernel:_%{alt_kernel}}#g' Makefile
@@ -1592,6 +1594,10 @@
All persons listed below can be reached at <cvs_login>@pld-linux.org
$Log$
+Revision 1.819 2010/09/20 09:17:43 baggins
+- rel 2
+- fix local root on 64bit kernels
+
Revision 1.818 2010/09/19 18:36:12 arekm
- rel 1
================================================================
Index: packages/kernel/kernel-CVE-2010-3081.patch
diff -u /dev/null packages/kernel/kernel-CVE-2010-3081.patch:1.1
--- /dev/null Mon Sep 20 11:17:49 2010
+++ packages/kernel/kernel-CVE-2010-3081.patch Mon Sep 20 11:17:43 2010
@@ -0,0 +1,189 @@
+From c41d68a513c71e35a14f66d71782d27a79a81ea6 Mon Sep 17 00:00:00 2001
+From: H. Peter Anvin <hpa at linux.intel.com>
+Date: Tue, 7 Sep 2010 16:16:18 -0700
+Subject: [PATCH] compat: Make compat_alloc_user_space() incorporate the access_ok()
+
+compat_alloc_user_space() expects the caller to independently call
+access_ok() to verify the returned area. A missing call could
+introduce problems on some architectures.
+
+This patch incorporates the access_ok() check into
+compat_alloc_user_space() and also adds a sanity check on the length.
+The existing compat_alloc_user_space() implementations are renamed
+arch_compat_alloc_user_space() and are used as part of the
+implementation of the new global function.
+
+This patch assumes NULL will cause __get_user()/__put_user() to either
+fail or access userspace on all architectures. This should be
+followed by checking the return value of compat_access_user_space()
+for NULL in the callers, at which time the access_ok() in the callers
+can also be removed.
+
+Reported-by: Ben Hawkes <hawkes at sota.gen.nz>
+Signed-off-by: H. Peter Anvin <hpa at linux.intel.com>
+Acked-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
+Acked-by: Chris Metcalf <cmetcalf at tilera.com>
+Acked-by: David S. Miller <davem at davemloft.net>
+Acked-by: Ingo Molnar <mingo at elte.hu>
+Acked-by: Thomas Gleixner <tglx at linutronix.de>
+Acked-by: Tony Luck <tony.luck at intel.com>
+Cc: Andrew Morton <akpm at linux-foundation.org>
+Cc: Arnd Bergmann <arnd at arndb.de>
+Cc: Fenghua Yu <fenghua.yu at intel.com>
+Cc: H. Peter Anvin <hpa at zytor.com>
+Cc: Heiko Carstens <heiko.carstens at de.ibm.com>
+Cc: Helge Deller <deller at gmx.de>
+Cc: James Bottomley <jejb at parisc-linux.org>
+Cc: Kyle McMartin <kyle at mcmartin.ca>
+Cc: Martin Schwidefsky <schwidefsky at de.ibm.com>
+Cc: Paul Mackerras <paulus at samba.org>
+Cc: Ralf Baechle <ralf at linux-mips.org>
+Cc: <stable at kernel.org>
+---
+ arch/ia64/include/asm/compat.h | 2 +-
+ arch/mips/include/asm/compat.h | 2 +-
+ arch/parisc/include/asm/compat.h | 2 +-
+ arch/powerpc/include/asm/compat.h | 2 +-
+ arch/s390/include/asm/compat.h | 2 +-
+ arch/sparc/include/asm/compat.h | 2 +-
+ arch/x86/include/asm/compat.h | 2 +-
+ include/linux/compat.h | 3 +++
+ kernel/compat.c | 21 +++++++++++++++++++++
+ 10 files changed, 32 insertions(+), 8 deletions(-)
+
+diff --git a/arch/ia64/include/asm/compat.h b/arch/ia64/include/asm/compat.h
+index f90edc8..9301a28 100644
+--- a/arch/ia64/include/asm/compat.h
++++ b/arch/ia64/include/asm/compat.h
+@@ -199,7 +199,7 @@ ptr_to_compat(void __user *uptr)
+ }
+
+ static __inline__ void __user *
+-compat_alloc_user_space (long len)
++arch_compat_alloc_user_space (long len)
+ {
+ struct pt_regs *regs = task_pt_regs(current);
+ return (void __user *) (((regs->r12 & 0xffffffff) & -16) - len);
+diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
+index 613f691..dbc5106 100644
+--- a/arch/mips/include/asm/compat.h
++++ b/arch/mips/include/asm/compat.h
+@@ -145,7 +145,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+ return (u32)(unsigned long)uptr;
+ }
+
+-static inline void __user *compat_alloc_user_space(long len)
++static inline void __user *arch_compat_alloc_user_space(long len)
+ {
+ struct pt_regs *regs = (struct pt_regs *)
+ ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
+diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
+index 02b77ba..efa0b60 100644
+--- a/arch/parisc/include/asm/compat.h
++++ b/arch/parisc/include/asm/compat.h
+@@ -147,7 +147,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+ return (u32)(unsigned long)uptr;
+ }
+
+-static __inline__ void __user *compat_alloc_user_space(long len)
++static __inline__ void __user *arch_compat_alloc_user_space(long len)
+ {
+ struct pt_regs *regs = ¤t->thread.regs;
+ return (void __user *)regs->gr[30];
+diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
+index 396d21a..a11d4ea 100644
+--- a/arch/powerpc/include/asm/compat.h
++++ b/arch/powerpc/include/asm/compat.h
+@@ -134,7 +134,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+ return (u32)(unsigned long)uptr;
+ }
+
+-static inline void __user *compat_alloc_user_space(long len)
++static inline void __user *arch_compat_alloc_user_space(long len)
+ {
+ struct pt_regs *regs = current->thread.regs;
+ unsigned long usp = regs->gpr[1];
+diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
+index 104f200..a875c2f 100644
+--- a/arch/s390/include/asm/compat.h
++++ b/arch/s390/include/asm/compat.h
+@@ -181,7 +181,7 @@ static inline int is_compat_task(void)
+
+ #endif
+
+-static inline void __user *compat_alloc_user_space(long len)
++static inline void __user *arch_compat_alloc_user_space(long len)
+ {
+ unsigned long stack;
+
+diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
+index 5016f76..6f57325 100644
+--- a/arch/sparc/include/asm/compat.h
++++ b/arch/sparc/include/asm/compat.h
+@@ -167,7 +167,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+ return (u32)(unsigned long)uptr;
+ }
+
+-static inline void __user *compat_alloc_user_space(long len)
++static inline void __user *arch_compat_alloc_user_space(long len)
+ {
+ struct pt_regs *regs = current_thread_info()->kregs;
+ unsigned long usp = regs->u_regs[UREG_I6];
+diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
+index 306160e..1d9cd27 100644
+--- a/arch/x86/include/asm/compat.h
++++ b/arch/x86/include/asm/compat.h
+@@ -205,7 +205,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+ return (u32)(unsigned long)uptr;
+ }
+
+-static inline void __user *compat_alloc_user_space(long len)
++static inline void __user *arch_compat_alloc_user_space(long len)
+ {
+ struct pt_regs *regs = task_pt_regs(current);
+ return (void __user *)regs->sp - len;
+diff --git a/include/linux/compat.h b/include/linux/compat.h
+index 9ddc878..5778b55 100644
+--- a/include/linux/compat.h
++++ b/include/linux/compat.h
+@@ -360,5 +360,8 @@ extern ssize_t compat_rw_copy_check_uvector(int type,
+ const struct compat_iovec __user *uvector, unsigned long nr_segs,
+ unsigned long fast_segs, struct iovec *fast_pointer,
+ struct iovec **ret_pointer);
++
++extern void __user *compat_alloc_user_space(unsigned long len);
++
+ #endif /* CONFIG_COMPAT */
+ #endif /* _LINUX_COMPAT_H */
+diff --git a/kernel/compat.c b/kernel/compat.c
+index e167efc..c9e2ec0 100644
+--- a/kernel/compat.c
++++ b/kernel/compat.c
+@@ -1126,3 +1126,24 @@ compat_sys_sysinfo(struct compat_sysinfo __user *info)
+
+ return 0;
+ }
++
++/*
++ * Allocate user-space memory for the duration of a single system call,
++ * in order to marshall parameters inside a compat thunk.
++ */
++void __user *compat_alloc_user_space(unsigned long len)
++{
++ void __user *ptr;
++
++ /* If len would occupy more than half of the entire compat space... */
++ if (unlikely(len > (((compat_uptr_t)~0) >> 1)))
++ return NULL;
++
++ ptr = arch_compat_alloc_user_space(len);
++
++ if (unlikely(!access_ok(VERIFY_WRITE, ptr, len)))
++ return NULL;
++
++ return ptr;
++}
++EXPORT_SYMBOL_GPL(compat_alloc_user_space);
+--
+1.7.3
+
================================================================
---- CVS-web:
http://cvs.pld-linux.org/cgi-bin/cvsweb.cgi/packages/kernel/kernel.spec?r1=1.818&r2=1.819&f=u
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