CVE-2021-36148
CVE-2021-36148 is a high-severity vulnerability in Linux Acrn with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (47th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Linux Acrn
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2021-36148?
- 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.
- How severe is CVE-2021-36148?
- CVE-2021-36148 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-36148 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-36148?
- CVE-2021-36148 affects Linux Acrn. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-36148?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-36148 published?
- CVE-2021-36148 was published on 2021-07-02 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:linux:acrn:*:*:*:*:*:*:*:*
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