diff options
| author | Adrian Bunk <bunk@stusta.de> | 2006-11-15 17:01:46 +0100 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-11-18 19:28:04 -0800 |
| commit | c721af6db5992d16fbd93855666eafa616512e00 (patch) | |
| tree | a8fd62151853df32d0ed03e4f46c269b75d6eef4 | |
| parent | 9a74fa0d377c3c1e633491b5500296174f4c41df (diff) | |
[PATCH] security/seclvl.c: fix time wrap (CVE-2005-4352)
initlvl=2 in seclvl gives the guarantee
"Cannot decrement the system time".
But it was possible to set the time to the maximum unixtime value
(19 Jan 2038) resulting in a wrap to the minimum value.
This patch fixes this by disallowing setting the time to any date
after 2030 with initlvl=2.
This patch does not apply to kernel 2.6.19 since the seclvl module was
already removed in this kernel.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | security/seclvl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/seclvl.c b/security/seclvl.c index c26dd7de0471..d5371b8dae01 100644 --- a/security/seclvl.c +++ b/security/seclvl.c @@ -370,6 +370,8 @@ static int seclvl_settime(struct timespec *tv, struct timezone *tz) current->group_leader->pid); return -EPERM; } /* if attempt to decrement time */ + if (tv->tv_sec > 1924988400) /* disallow dates after 2030) */ + return -EPERM; /* CVE-2005-4352 */ } /* if seclvl > 1 */ return 0; } |