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authorGreg Kroah-Hartman <gregkh@suse.de>2006-07-06 13:05:42 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-07-06 13:05:42 -0700
commit9e4e45f19bdd41b4091e5fe556f816f4046c7598 (patch)
tree532a3c15aa1810ae15547cfd9f15cd84bcd2dfb0
parent2bd44a13c95e870c64ff0e3c22b5d727eb6627ea (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 105e102e1c4a..413706a55cb6 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1802,7 +1802,7 @@ 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;
}