Bug 1228204 (CVE-2015-4167)

Summary: CVE-2015-4167 Kernel: fs: udf: Check length of extended attributes to avoid oops
Product: [Other] Security Response Reporter: Prasad Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aquini, arm-mgr, bhu, blc, dhoward, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, williams, wmealing
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
An inode data validation error was found in Linux kernels built with UDF file system (CONFIG_UDF_FS) support. 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: 2019-06-08 02:41:30 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 12:02:12 UTC
Linux kernel built with the UDF file system(CONFIG_UDF_FS) support is
vulnerable to a crash. It could occur while fetching inode information from a
corrupted/malicious udf file system image.

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

Upstream fix:
  -> https://git.kernel.org/linus/23b133bdc452aa441fcb9b82cbf6dd05cfd342d0

  -> http://www.openwall.com/lists/oss-security/2015/06/03/13

Comment 1 Prasad Pandit 2015-06-04 16:33:13 UTC

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 2015-06-04 16:33:47 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 05:18:26 UTC

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

Comment 4 Wade Mealing 2015-07-24 00:05:18 UTC

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.