Bug 2552444

Summary: CVE-2026-86848 dpdk: dpdk: Time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: dpdkAssignee: Timothy Redaelli <tredaelli>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: aconole, tredaelli
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["3a77296f-dde5-4bc6-904d-6b1de2b3d7b1"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2529853    

Description Ganesh 2026-10-14 16:04:00 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot still double-fetches src_desc->next: it checks the index, then indexes the live guest table with a second read. A guest can change next after the check and force an out-of-bounds access. This is a remaining TOCTOU after CVE-2020-14375, not that ID.