diff options
| author | Philip Guenther <guenther@cvs.openbsd.org> | 2014-04-18 11:51:18 +0000 |
|---|---|---|
| committer | Philip Guenther <guenther@cvs.openbsd.org> | 2014-04-18 11:51:18 +0000 |
| commit | 0a8d233b5a2f60bcd449b707cc466d17560dec34 (patch) | |
| tree | 2e60f99714a1681f8961c7ac537c7791334ec02e /sys/arch/hppa64 | |
| parent | c69678059df7cbd9d0d400a81c0b2430847a6436 (diff) | |
Have each thread keeps its own (counted!) reference to the process's ucreds
to avoid possible use-after-free references when swapping ids in threaded
processes. "Do I have the right creds?" checks are always made with the
threads creds.
Inspired by FreeBSD and NetBSD
"right time" deraadt@
Diffstat (limited to 'sys/arch/hppa64')
| -rw-r--r-- | sys/arch/hppa64/hppa64/trap.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/arch/hppa64/hppa64/trap.c b/sys/arch/hppa64/hppa64/trap.c index 02472f0d158..8310c42db1b 100644 --- a/sys/arch/hppa64/hppa64/trap.c +++ b/sys/arch/hppa64/hppa64/trap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: trap.c,v 1.35 2014/04/08 09:34:23 mpi Exp $ */ +/* $OpenBSD: trap.c,v 1.36 2014/04/18 11:51:16 guenther Exp $ */ /* * Copyright (c) 2005 Michael Shalayeff @@ -212,6 +212,9 @@ trap(int type, struct trapframe *frame) ssm(PSL_I, mask); } + if (type & T_USER) + refreshcreds(p); + switch (type) { case T_NONEXIST: case T_NONEXIST | T_USER: |