Bug 2295760 (CVE-2024-6505)

Summary: CVE-2024-6505 qemu-kvm: virtio-net: queue index out-of-bounds access in software RSS
Product: [Other] Security Response Reporter: Mauro Matteo Cascella <mcascell>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ailan, ddepaula, jen, jferlan, jmaloy, kkiwi, knoel, lilhuang, mrezanin, mst, nilal, pbonzini, ymankad
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the virtio-net device in QEMU. When enabling the RSS feature on the virtio-net network card, the indirections_table data within RSS becomes controllable. Setting excessively large values may cause an index out-of-bounds issue, potentially resulting in heap overflow access. This flaw allows a privileged user in the guest to crash the QEMU process on the host.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2295791    
Bug Blocks:    

Description Mauro Matteo Cascella 2024-07-04 09:52:34 UTC 
A flaw was found in the virtio-net device in QEMU. When enabling the RSS feature on the virtio-net network card, the indirections_table data within RSS becomes controllable. Setting excessively large values may cause an index out-of-bounds issue, potentially resulting in heap overflow access. This flaw could be used by a privileged user in the guest to crash the QEMU process on the host.
Comment 1 Mauro Matteo Cascella 2024-11-12 16:22:46 UTC 
Upstream fix:
https://gitlab.com/qemu-project/qemu/-/commit/f1595ceb