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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-04-22 16:34:27 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-21 16:29:02 -0400 |
| commit | ffc51be82b17e1c515fdb2dd5b92605798216b30 (patch) | |
| tree | efaedf7c6979ff33e83eda9870c10f287d6be6d6 /arch/x86 | |
| parent | 0088b6ec8fa4773dd56b861bfc1630f4c3c069db (diff) | |
| download | linux-ffc51be82b17e1c515fdb2dd5b92605798216b30.tar.bz2 | |
um: missing checks of __put_user()/__get_user() return values
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/um/signal.c | 4 | ||||
| -rw-r--r-- | arch/x86/um/syscalls_32.c | 12 |
2 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index 35b283d3df0c..bb0fb03b9f85 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -544,8 +544,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, set->sig[0]); err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate); if (sizeof(*set) == 16) { - __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]); - __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); + err |= __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]); + err |= __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); } else err |= __copy_to_user(&frame->uc.uc_sigmask, set, diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c index 70ca357393b8..b853e8600b9d 100644 --- a/arch/x86/um/syscalls_32.c +++ b/arch/x86/um/syscalls_32.c @@ -44,10 +44,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act, old_sigset_t mask; if (!access_ok(VERIFY_READ, act, sizeof(*act)) || __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); siginitset(&new_ka.sa.sa_mask, mask); } @@ -56,10 +56,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act, if (!ret && oact) { if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); } return ret; |