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authorGreg Kroah-Hartman <gregkh@suse.de>2006-07-06 13:02:05 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-07-06 13:02:05 -0700
commit0af184bb9f80edfbb94de46cb52e9592e5a547b0 (patch)
treec8b28a09bb71332cbf1452aff7d89adb74c33f6b
parent52cbb7b78994ea3799f1bbb8c03bce1e2f72a271 (diff)
fix prctl privilege escalation and suid_dumpable (CVE-2006-2451)
Based on a patch from Ernie Petrides During security research, Red Hat discovered a behavioral flaw in core dump handling. A local user could create a program that would cause a core file to be dumped into a directory they would not normally have permissions to write to. This could lead to a denial of service (disk consumption), or allow the local user to gain root privileges. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--kernel/sys.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index 0b6ec0e7936f..59273f7631b7 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1991,7 +1991,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
error = current->mm->dumpable;
break;
case PR_SET_DUMPABLE:
- if (arg2 < 0 || arg2 > 2) {
+ if (arg2 < 0 || arg2 > 1) {
error = -EINVAL;
break;
}