Bug 286088 (CVE-2009-1883)

Summary:	Kernel: z90crypt_unloced_ioctl() Privilege escalation (CVE-2009-1883)
Product:	Gentoo Security	Reporter:	Alex Legler (RETIRED) <a3li>
Component:	Kernel	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	hardened-kernel+disabled, kernel
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://bugzilla.redhat.com/show_bug.cgi?id=505983
Whiteboard:	[linux <=2.6.9]
Package list:		Runtime testing required:	---

Description Alex Legler (RETIRED) archtester

2009-09-23 14:23:53 UTC

CVE-2009-1883 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-1883):
  The z90crypt_unlocked_ioctl function in the z90crypt driver in the
  Linux kernel 2.6.9 does not perform a capability check for the
  Z90QUIESCE operation, which allows local users to leverage euid 0
  privileges to force a driver outage.