Bug 1757363 (CVE-2017-18549)

Summary:	CVE-2017-18549 kernel: information exposure in drivers/scsi/aacraid/commctrl.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dominik.mierzejewski, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jschorr, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, rkeshri, rt-maint, rvrbovsk, steved, williams
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 in the aac_send_raw_srb and aac_get_hba_info in drivers/scsi/aacraid/commctrl.c in the SCSI, where an uninitialized variable could copy stack-allocated structs to userspace without initializing its member's variables. This flaw can lead to the exposure of kernel stack memory. Clearing the memory by memset to ZERO at initialization can prevent information leaks.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-02-18 08:09:34 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:	1757364
Bug Blocks:	1757365

Description Dhananjay Arunesh 2019-10-01 10:34:02 UTC

An issue was discovered in drivers/scsi/aacraid/commctrl.c in the Linux kernel. There is potential exposure of kernel stack memory because aac_send_raw_srb does not initialize the reply structure.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342ffc26693b528648bdc9377e51e4f2450b4860

Comment 1 Dhananjay Arunesh 2019-10-01 10:34:31 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1757364]

Comment 2 Justin M. Forbes 2019-10-01 13:46:54 UTC

This issue was fixed in upstream kernel 4.13 and never impacted any currently supported version of Fedora.

Comment 4 Rohit Keshri 2020-02-18 06:09:31 UTC

Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Comment 5 Product Security DevOps Team 2020-02-18 08:09:34 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2017-18549