472384 – (CVE-2013-2141) Kernel : signal: information leak in tkill/tgkill (CVE-2013-2141)

Bug 472384 (CVE-2013-2141) - Kernel : signal: information leak in tkill/tgkill (CVE-2013-2141)

Summary: Kernel : signal: information leak in tkill/tgkill (CVE-2013-2141)

Status:	RESOLVED FIXED

Alias:	CVE-2013-2141

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Kernel Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2013-06-05 08:45 UTC by Agostino Sarubbo
Modified:	2021-10-25 00:55 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

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Description Agostino Sarubbo gentoo-dev

2013-06-05 08:45:35 UTC

From ${URL} :

Linux kernel which supports tkill/tgkill routines is vulnerable to an
information leakage flaw. It occurs when routine tkill(2) or tgkill(2) is used
send signal to thread.

A user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/b9e146d8eb3b9ecae5086d373b50fa0c1f3e7f0f

Reference:
----------
 -> http://www.openwall.com/lists/oss-security/2013/06/02/1

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2013-08-30 01:03:34 UTC

CVE-2013-2141 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2141):
  The do_tkill function in kernel/signal.c in the Linux kernel before 3.8.9
  does not initialize a certain data structure, which allows local users to
  obtain sensitive information from kernel memory via a crafted application
  that makes a (1) tkill or (2) tgkill system call.

Comment 2 John Helmert III archtester

2021-10-25 00:55:21 UTC

In 3.9 onwards