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CVE-2021-47485

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields Overflowing either addrlimit or bytes_togo can allow us…

Published May 22, 2024CWE-120EPSS 0.24%

Overview

CVE-2021-47485 is a high-severity vulnerability. It was published on May 22, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields

Overflowing either addrlimit or bytes_togo can allow userspace to trigger

a buffer overflow of kernel memory. Check for overflows in all the places

doing math on user controlled buffers.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0d4395477741608d123dad51def9fe50b7ebe952Refgit.kernel.org/stable/c/0f8cdfff06829a0b0348b6debc29ff6a61967724Refgit.kernel.org/stable/c/3f57c3f67fd93b4da86aeffea1ca32c484d054adRefgit.kernel.org/stable/c/60833707b968d5ae02a75edb7886dcd4a957cf0dRefgit.kernel.org/stable/c/73d2892148aa4397a885b4f4afcfc5b27a325c42Refgit.kernel.org/stable/c/bda41654b6e0c125a624ca35d6d20beb8015b5d0Refgit.kernel.org/stable/c/c3e17e58f571f34c51aeb17274ed02c2ed5cf780Refgit.kernel.org/stable/c/d39bf40e55e666b5905fdbd46a0dced030ce87beRefgit.kernel.org/stable/c/0d4395477741608d123dad51def9fe50b7ebe952Refgit.kernel.org/stable/c/0f8cdfff06829a0b0348b6debc29ff6a61967724

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47485?

CVE-2021-47485 is a high-severity vulnerability. It was published on May 22, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2021-47485?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-47485?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-47485?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47485 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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