Bug 1228229 (CVE-2014-9728, CVE-2014-9729, CVE-2014-9730)

Summary:	CVE-2014-9728 CVE-2014-9729 CVE-2014-9730 Kernel: fs: udf: heap overflow in __udf_adinicb_readpage
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aquini, bhu, blc, dhoward, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, madhu.chinakonda, mchehab, mcressma, mlangsdo, nmurray, rt-maint, rvrbovsk, williams, wmealing
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A symlink size validation was missing in Linux kernels built with UDF file system (CONFIG_UDF_FS) support, allowing the corruption of kernel memory. An attacker able to mount a corrupted/malicious UDF file system image could cause the kernel to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 00:45:54 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	1211911

Description Prasad Pandit 2015-06-04 12:43:12 UTC

Linux kernel built with the UDF file system(CONFIG_UDF_FS) support is
vulnerable to a crash. It could occur while reading from a corrupted/malicious
udf file system image.

An unprivileged user could use this flaw to crash the kernel resulting in DoS.

Upstream fixes:
---------------
   -> https://git.kernel.org/linus/e159332b9af4b04d882dbcfe1bb0117f0a6d4b58
   -> https://git.kernel.org/linus/e237ec37ec154564f8690c5bd1795339955eeef9
   -> https://git.kernel.org/linus/a1d47b262952a45aae62bd49cfaf33dd76c11a2c

Reference:
----------
   -> http://www.openwall.com/lists/oss-security/2015/06/03/14

Comment 1 Prasad Pandit 2015-06-05 06:22:28 UTC

Statement:

This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

Comment 2 Prasad Pandit 2015-06-05 06:23:18 UTC

This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Comment 3 Prasad Pandit 2015-06-05 06:23:53 UTC

Acknowledgement:

Red Hat would like to thank Carl H Lunde for reporting this issue

Comment 5 Wade Mealing 2015-07-16 01:17:23 UTC

Mitigation:

The UDF filesystem is enabled via loading the UDF kernel module.  The kernel module can be prevented from loading via blacklisting see https://access.redhat.com/solutions/41278 for more information.