Bug 1749976 (CVE-2019-15223)

Summary: CVE-2019-15223 kernel: Null pointer dereference in the sound/usb/line6/driver.c
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mcressma, mjg59, mlangsdo, nmurray, rt-maint, rvrbovsk, steved, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A NULL pointer dereference flaw was found in the way the Line 6 POD USB driver in the Linux kernel handled disconnection. This flaw allows an attacker with physical access to the system to crash the system.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-10-25 09:53:17 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: 1738610, 1749987, 1820447, 1820448    
Bug Blocks: 1749989    

Description Pedro Sampaio 2019-09-07 01:21:05 UTC
An issue was discovered in the Linux kernel before 5.1.8. There is a NULL pointer dereference caused by a malicious USB device in the sound/usb/line6/driver.c driver.

Upstream patch:




Comment 1 Pedro Sampaio 2019-09-07 02:33:30 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1749987]

Comment 2 Justin M. Forbes 2019-09-09 08:17:06 UTC
This was fixed for Fedora with the 5.1.8 stable kernel updates.

Comment 3 Petr Matousek 2020-04-03 06:11:03 UTC

This issue is rated as having Low impact because of the physical access needed to trigger this issue.

Comment 4 Petr Matousek 2020-04-03 06:11:07 UTC

To mitigate this issue, prevent module snd-usb-line6 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.