Bug 1731784

Summary: kernel: check null return when calling pci_ioremap_bar
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: acaringi, airlied, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, fhrbata, hdegoede, hkrzesin, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, mchehab, mjg59, mlangsdo, nmurray, plougher, rvrbovsk, steved, williams
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2020-01-11 08:33:06 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1731785    

Description Dhananjay Arunesh 2019-07-22 04:24:23 UTC 
A vulnerability was discovered in Kernel, where pci_ioremap_bar may return null. This is eventually de-referenced at drivers/dma/dw/core.c:1154 and drivers/dma/dw/core.c:1168. A null check is needed to prevent null de-reference.

Reference:
https://lore.kernel.org/patchwork/patch/1102343/