CVE-2021-36148

High

Published: 02 July 2021

Published

02 July 2021

Modified

21 November 2024

KEV Added

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Patch

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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Score 0.0021 44.0th percentile

Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-36148 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Linux Acrn. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 44.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

An issue was discovered in ACRN before 2.5. dmar_free_irte in hypervisor/arch/x86/vtd.c allows an irte_alloc_bitmap buffer overflow.

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

linux

acrn

≤ 2.5

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.