When was CVE-2021-47177 disclosed?

CVE-2021-47177 was first published in the National Vulnerability Database on March 25, 2024, with the most recent update on March 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-47177 actively exploited?

CVE-2021-47177 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-47177?

CVE-2021-47177 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-47177?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47177, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2021-47177

MEDIUMNVD 5.55.5—

5.5

In the Linux kernel, the following vulnerability has been resolved:

iommu/vt-d: Fix sysfs leak in alloc_iommu()

iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequent errors.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 2.8%
KEV: Not listed

References (12)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/044bbe8b92ab4e542de7f6c93c88ea65cccd8e29
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ee74d5a48635c848c20f152d0d488bf84641304
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22da9f4978381a99f1abaeaf6c9b83be6ab5ddd8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ec5e9bb6b0560c90d315559c28a99723c80b996
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca466561eef36d1ec657673e3944eb6340bddb5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f01134321d04f47c718bb41b799bcdeda27873d2
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/044bbe8b92ab4e542de7f6c93c88ea65cccd8e29
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0ee74d5a48635c848c20f152d0d488bf84641304
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/22da9f4978381a99f1abaeaf6c9b83be6ab5ddd8
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2ec5e9bb6b0560c90d315559c28a99723c80b996
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ca466561eef36d1ec657673e3944eb6340bddb5b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f01134321d04f47c718bb41b799bcdeda27873d2

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CVE-2021-47177

Published

Last Modified

References (12)

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-47177?

Same CWE

CVE-2021-47177

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-47177?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same CWE)