Bug 1597826 (CVE-2018-12928)

Summary:	CVE-2018-12928 kernel: NULL pointer dereference in hfs_ext_read_extent in hfs.ko
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, airlied, aquini, bhu, bskeggs, dbaker, dhoward, esammons, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jokerman, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, matt, mchehab, mcressma, mguzik, mjg59, nmurray, plougher, rvrbovsk, skozina, steved, sthangav, trankin, vdronov, williams, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel, a NULL pointer dereference can happen in hfs_ext_read_extent in hfs.ko which can occur during a mount of a crafted hfs filesystem. This can lead to a system crash and a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-07-10 11:27:13 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1597827, 1597830
Bug Blocks:	1597828

Description Laura Pardo 2018-07-03 16:49:34 UTC

A flaw was found in the Linux kernel, a NULL pointer dereference can happen in hfs_ext_read_extent in hfs.ko leading to a system crash and a denial of service. This can occur during a mount of a crafted hfs filesystem.

References:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763384

https://marc.info/?l=linux-fsdevel&m=152406881024567&w=2

https://marc.info/?t=152406893000001&r=1&w=2

Comment 1 Laura Pardo 2018-07-03 16:51:05 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1597827]

Comment 6 Vladis Dronov 2018-07-10 11:27:13 UTC

Note:

An HFS filesystem is not built for any Red Hat products except for Red Hat Enterprise Linux 5, which is no longer in development and is in Extended Life Phase (https://access.redhat.com/support/policy/updates/errata/#Extended_Life_Cycle_Phase).