Bug 1781899 (CVE-2019-19378)

Summary: CVE-2019-19378 kernel: out-of-bounds write in index_rbio_pages in fs/btrfs/raid56.c
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, 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, qzhao, rt-maint, rvrbovsk, steved, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1781900    
Bug Blocks: 1781901    

Description Guilherme de Almeida Suckevicz 2019-12-10 20:49:38 UTC
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image can lead to slab-out-of-bounds write access in index_rbio_pages in fs/btrfs/raid56.c.

Reference:
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19378

Comment 1 Guilherme de Almeida Suckevicz 2019-12-10 20:52:12 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1781900]