diff options
| author | Kees Cook <keescook@chromium.org> | 2013-10-01 22:13:34 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-13 16:08:32 -0700 |
| commit | 5c19adb25bc8d618619c24c4500bbbbc06bdba0b (patch) | |
| tree | f7aed10573f88b45fed25ebb0bf74199e0f6c5e9 | |
| parent | 34b6bdb2a889231e450774b5227a80c2f5051bc0 (diff) | |
sparc: fix ldom_reboot buffer overflow harder
[ Upstream commit 20928bd3f08afb036c096d9559d581926b895918 ]
The length argument to strlcpy was still wrong. It could overflow the end of
full_boot_str by 5 bytes. Instead of strcat and strlcpy, just use snprint.
Reported-by: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/sparc/kernel/ds.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index c129cc93aa4f..252f8768aac6 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -842,9 +842,8 @@ void ldom_reboot(const char *boot_command) if (boot_command && strlen(boot_command)) { unsigned long len; - strcpy(full_boot_str, "boot "); - strlcpy(full_boot_str + strlen("boot "), boot_command, - sizeof(full_boot_str)); + snprintf(full_boot_str, sizeof(full_boot_str), "boot %s", + boot_command); len = strlen(full_boot_str); if (reboot_data_supported) { |