diff options
Diffstat (limited to 'ipc-zero-struct-memory-for-compat-fns.patch')
-rw-r--r-- | ipc-zero-struct-memory-for-compat-fns.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/ipc-zero-struct-memory-for-compat-fns.patch b/ipc-zero-struct-memory-for-compat-fns.patch deleted file mode 100644 index b682c7d..0000000 --- a/ipc-zero-struct-memory-for-compat-fns.patch +++ /dev/null @@ -1,73 +0,0 @@ -From: Dan Rosenberg <drosenberg@vsecurity.com> -Date: Wed, 27 Oct 2010 22:34:17 +0000 (-0700) -Subject: ipc: initialize structure memory to zero for compat functions -X-Git-Tag: v2.6.37-rc1~85^2~50 -X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=03145beb455cf5c20a761e8451e30b8a74ba58d9 - -ipc: initialize structure memory to zero for compat functions - -This takes care of leaking uninitialized kernel stack memory to -userspace from non-zeroed fields in structs in compat ipc functions. - -Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> -Cc: Manfred Spraul <manfred@colorfullife.com> -Cc: Arnd Bergmann <arnd@arndb.de> -Cc: <stable@kernel.org> -Signed-off-by: Andrew Morton <akpm@linux-foundation.org> -Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> ---- - -diff --git a/ipc/compat.c b/ipc/compat.c -index 9dc2c7d..845a287 100644 ---- a/ipc/compat.c -+++ b/ipc/compat.c -@@ -241,6 +241,8 @@ long compat_sys_semctl(int first, int second, int third, void __user *uptr) - struct semid64_ds __user *up64; - int version = compat_ipc_parse_version(&third); - -+ memset(&s64, 0, sizeof(s64)); -+ - if (!uptr) - return -EINVAL; - if (get_user(pad, (u32 __user *) uptr)) -@@ -421,6 +423,8 @@ long compat_sys_msgctl(int first, int second, void __user *uptr) - int version = compat_ipc_parse_version(&second); - void __user *p; - -+ memset(&m64, 0, sizeof(m64)); -+ - switch (second & (~IPC_64)) { - case IPC_INFO: - case IPC_RMID: -@@ -594,6 +598,8 @@ long compat_sys_shmctl(int first, int second, void __user *uptr) - int err, err2; - int version = compat_ipc_parse_version(&second); - -+ memset(&s64, 0, sizeof(s64)); -+ - switch (second & (~IPC_64)) { - case IPC_RMID: - case SHM_LOCK: -diff --git a/ipc/compat_mq.c b/ipc/compat_mq.c -index d8d1e9f..380ea4f 100644 ---- a/ipc/compat_mq.c -+++ b/ipc/compat_mq.c -@@ -53,6 +53,9 @@ asmlinkage long compat_sys_mq_open(const char __user *u_name, - void __user *p = NULL; - if (u_attr && oflag & O_CREAT) { - struct mq_attr attr; -+ -+ memset(&attr, 0, sizeof(attr)); -+ - p = compat_alloc_user_space(sizeof(attr)); - if (get_compat_mq_attr(&attr, u_attr) || - copy_to_user(p, &attr, sizeof(attr))) -@@ -127,6 +130,8 @@ asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, - struct mq_attr __user *p = compat_alloc_user_space(2 * sizeof(*p)); - long ret; - -+ memset(&mqstat, 0, sizeof(mqstat)); -+ - if (u_mqstat) { - if (get_compat_mq_attr(&mqstat, u_mqstat) || - copy_to_user(p, &mqstat, sizeof(mqstat))) |