Bug 1552867 (CVE-2018-7740)

Summary:	CVE-2018-7740 kernel: Denial of service in resv_map_release function in mm/hugetlb.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	airlied, ajax, aquini, bhu, blc, bskeggs, dhoward, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, pmatouse, rt-maint, rvrbovsk, skozina, slawomir, steved, vdronov, williams, wmealing, yozone
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	The resv_map_release function in mm/hugetlb.c in the Linux kernel, through 4.15.7, allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:16:56 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:	1552868, 1552992, 1552993, 1552994, 1552995, 1552996, 1552997, 1552998, 1552999, 1553000, 1553001, 1553002, 1553005, 1553006, 1553007, 1553008, 1553009, 1553010, 1563927
Bug Blocks:	1552870

Description Pedro Sampaio 2018-03-07 21:11:05 UTC

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

Upsteam bug:

https://bugzilla.kernel.org/show_bug.cgi?id=199037

Comment 1 Pedro Sampaio 2018-03-07 21:12:19 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1552868]

Comment 13 Justin M. Forbes 2018-05-04 17:00:37 UTC

This was fixed for fedora with 4.16.3 stable updates

Comment 14 errata-xmlrpc 2018-10-30 07:31:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3083

Comment 15 errata-xmlrpc 2018-10-30 07:37:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3096 https://access.redhat.com/errata/RHSA-2018:3096