Bug 2571083 (CVE-2026-49036)

Summary: CVE-2026-49036 migtd: migtd: Denial of Service via shared memory race condition
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Intel Trust Domain Extensions Migration Trust Domain (MigTD). A race condition between when shared memory is verified and when it is used allows a privileged local attacker, such as a host hypervisor, to alter memory contents during processing. An attacker can exploit this vulnerability to trigger a Denial of Service (DoS) or cause data corruption on the system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 20:39:43 UTC 
Time-of-check time-of-use race condition in the MigTD shared memory for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable data corruption. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.