diff options
| -rw-r--r-- | arch/x86/kernel/tlb_uv.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c index b362913f0199..c503b7f04481 100644 --- a/arch/x86/kernel/tlb_uv.c +++ b/arch/x86/kernel/tlb_uv.c @@ -492,6 +492,8 @@ static ssize_t uv_ptc_proc_write(struct file *file, const char __user *user, long newmode; char optstr[64]; + if (count > 64) + return -EINVAL; if (copy_from_user(optstr, user, count)) return -EFAULT; optstr[count - 1] = '\0'; |