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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-08-20 16:18:53 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-24 10:09:40 +0200 |
| commit | b05faef93808bf2f28cc855e40b82af2368a7df6 (patch) | |
| tree | dcf7713d8b49aadeb11ac8980cb004deab6fb812 /arch | |
| parent | 4777b47e7b19a71fec1daa92bafa0857d7404e14 (diff) | |
| download | linux-b05faef93808bf2f28cc855e40b82af2368a7df6.tar.gz | |
mips: copy_from_user() must zero the destination on access_ok() failure
commit e69d700535ac43a18032b3c399c69bf4639e89a2 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/uaccess.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h index 7f109d4f64a4..b6e20f3053f4 100644 --- a/arch/mips/include/asm/uaccess.h +++ b/arch/mips/include/asm/uaccess.h @@ -14,6 +14,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/thread_info.h> +#include <linux/string.h> #include <asm/asm-eva.h> /* @@ -1170,6 +1171,8 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n); __cu_len = __invoke_copy_from_user(__cu_to, \ __cu_from, \ __cu_len); \ + } else { \ + memset(__cu_to, 0, __cu_len); \ } \ } \ __cu_len; \ |