Bug 1838546 (CVE-2020-13253)

Summary: CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting in DoS
Product: [Other] Security Response Reporter: Prasad J Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: amit, berrange, cfergeau, dbecker, dwmw2, itamar, jen, jferlan, jforbes, jjoyce, jmaloy, jschluet, kbasil, knoel, lhh, lpeer, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, philmd, ribarry, rjones, robinlee.sysu, sclewis, slinaber, virt-maint, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read-access flaw was found in the SD Memory Card emulator of the QEMU. This flaw occurs while performing block write commands via sdhci_write(), if a guest user has sent an 'address' which is out-of-bounds of 's->wp_groups'. A guest user or process may use this flaw to crash the QEMU process resulting in a denial of service.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-05-21 15:15:25 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: 1838547, 1838548, 1910697    
Bug Blocks: 1836104    

Description Prasad J Pandit 2020-05-21 10:48:19 UTC
An out-of-bounds read access issue was found in the SD Memory Card emulator of the QEMU. It occurs while performing block write commands via sdhci_write(), if a guest user has sent 'address' which is OOB of 's->wp_groups'. A guest user/process may use this flaw to crash the QEMU process resulting in DoS.

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg05835.html

Comment 1 Prasad J Pandit 2020-05-21 10:49:08 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1838547]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1838548]

Comment 2 Prasad J Pandit 2020-05-21 18:32:05 UTC
Acknowledgments:

Name: Alexander Bulekov