Bug 1735637 (CVE-2017-18379)

Summary: CVE-2017-18379 kernel: out of bound access in drivers/nvme/target/fc.c
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, airlied, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, nyewale, plougher, rt-maint, rvrbovsk, steved, williams, wmealing, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel’s implementation of NVME over a fiber connection. A local attacker could use this flaw to create a situation in which specially crafted requests could corrupt memory or possibly escalate privileges.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-08-15 20:47:03 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: 1735639    
Bug Blocks: 1735640    

Description Dhananjay Arunesh 2019-08-01 07:52:34 UTC
A flaw was found in the linux kernels implementation of NVME over fiber connection.  A local attacker is able to create a situation in which speciacally crafted reqeusts could return kernel memory as inflight data or possibly corrupt kernel memory.

This may allow a local attacker to panic the system or escalate privileges.


Comment 1 Dhananjay Arunesh 2019-08-01 07:54:42 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1735639]

Comment 2 Justin M. Forbes 2019-08-01 12:39:27 UTC
This was fixed for Fedora in 4.14 and never impacted any currently supported Fedora releases.

Comment 4 Wade Mealing 2019-08-05 07:49:20 UTC
This flaw is rated as Important, it may allow a local attacker to issue an out-of-bounds write and gather information that is not intended to be accessed.  This information may weaken security measures in place making it easier for subsequent attacks to succeed.

Note: No current shipping versions of Red Hat Enterprise Linux are affected either by having the fix that solves that problem or not including the code that introduced the problem.

Comment 6 Product Security DevOps Team 2019-08-15 20:47:03 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):