Bug 283826 (CVE-2009-3043)

Summary:	Kernel: tty_ldisc_hangup() DoS, Privilege Escalation (CVE-2009-3043)
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:	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5c58ceff103d8a654f24769bb1baaf84a841b0cc
Whiteboard:	[linux <2.6.31]
Package list:		Runtime testing required:	---

Description Alex Legler (RETIRED) archtester

2009-09-06 09:50:10 UTC

CVE-2009-3043 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3043):
  The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the
  Linux kernel before 2.6.31-rc8 allows local users to cause a denial
  of service (system crash, sometimes preceded by a NULL pointer
  dereference) or possibly gain privileges via certain pseudo-terminal
  I/O activity, as demonstrated by KernelTtyTest.c.