diff options
| -rw-r--r-- | arch/x86/kernel/fpu/xstate.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 325db7850335..0cd7b73c25e8 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -1199,13 +1199,16 @@ int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf) int i; u64 xfeatures; u64 allowed_features; + struct xstate_header hdr; offset = offsetof(struct xregs_state, header); - size = sizeof(xfeatures); + size = sizeof(hdr); - if (__copy_from_user(&xfeatures, ubuf + offset, size)) + if (__copy_from_user(&hdr, ubuf + offset, size)) return -EFAULT; + xfeatures = hdr.xfeatures; + /* * Reject if the user sets any disabled or supervisor features: */ |