496602 – (CVE-2013-6463) Kernel: net: memory leak in recvmsg handlermsg name & msg_namelen logic (CVE-2013-6463)

Bug 496602 (CVE-2013-6463) - Kernel: net: memory leak in recvmsg handlermsg name & msg_namelen logic (CVE-2013-6463)

Summary: Kernel: net: memory leak in recvmsg handlermsg name & msg_namelen logic (CVE-...

Status:	RESOLVED FIXED

Alias:	CVE-2013-6463

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

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

URL:	http://www.openwall.com/lists/oss-sec...
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2013-12-31 17:39 UTC by Samuel Damashek (RETIRED)
Modified:	2022-03-25 19:28 UTC (History)
CC List:	1 user (show)

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

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Description Samuel Damashek (RETIRED) gentoo-dev

2013-12-31 17:39:59 UTC

From ${URL} :

Linux kernel built with the networking support(CONFIG_NET) is vulnerable to an 
information leakage flaw in the socket layer. It could occur while doing 
recvmsg(2), recvfrom(2) socket calls. It occurs due to improperly initialised 
msg_name & msg_namelen message header parameters.

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

Upstream fix:
https://git.kernel.org/linus/f3d3342602f8bcbf37d7c46641cb9bca7618eb1c

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=1039845

Comment 1 John Helmert III archtester

2022-03-25 19:28:00 UTC

Fixed in 3.13