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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-04-22 16:51:36 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-21 23:59:21 -0400 |
| commit | 187cd44e147ec7245ddd97bbd3305d29583288a9 (patch) | |
| tree | 53d312b49553b7000a1e06d055224759a5f75332 | |
| parent | 9a07880222b6e50cee2c2d66270cff0c34bfe7b8 (diff) | |
| download | op-kernel-dev-187cd44e147ec7245ddd97bbd3305d29583288a9.zip op-kernel-dev-187cd44e147ec7245ddd97bbd3305d29583288a9.tar.gz | |
sparc: missing checks of __get_user()/__put_user() return values
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/sparc/kernel/signal32.c | 10 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc_32.c | 12 |
2 files changed, 12 insertions, 10 deletions
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index 948700f..bb1513e 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -215,8 +215,9 @@ void do_sigreturn32(struct pt_regs *regs) (((unsigned long) sf) & 3)) goto segv; - get_user(pc, &sf->info.si_regs.pc); - __get_user(npc, &sf->info.si_regs.npc); + if (get_user(pc, &sf->info.si_regs.pc) || + __get_user(npc, &sf->info.si_regs.npc)) + goto segv; if ((pc | npc) & 3) goto segv; @@ -305,8 +306,9 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) (((unsigned long) sf) & 3)) goto segv; - get_user(pc, &sf->regs.pc); - __get_user(npc, &sf->regs.npc); + if (get_user(pc, &sf->regs.pc) || + __get_user(npc, &sf->regs.npc)) + goto segv; if ((pc | npc) & 3) goto segv; diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 627e89a..cd99c1a 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -184,10 +184,10 @@ sparc_sigaction (int sig, const struct old_sigaction __user *act, 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); new_ka.ka_restorer = NULL; } @@ -202,10 +202,10 @@ sparc_sigaction (int sig, const struct old_sigaction __user *act, */ 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; |
