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CVE-2022-49001

7.0 · HIGH

In the Linux kernel, the following vulnerability has been resolved: riscv: fix race when vmap stack overflow Currently, when detecting vmap stack overflow, riscv firstly switches to the so called…

Published Oct 21, 2024CWE-362EPSS 0.19%

Overview

CVE-2022-49001 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, 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:

riscv: fix race when vmap stack overflow

Currently, when detecting vmap stack overflow, riscv firstly switches

to the so called shadow stack, then use this shadow stack to call the

get_overflow_stack() to get the overflow stack. However, there's

a race here if two or more harts use the same shadow stack at the same

time.

To solve this race, we introduce spin_shadow_stack atomic var, which

will be swap between its own address and 0 in atomic way, when the

var is set, it means the shadow_stack is being used; when the var

is cleared, it means the shadow_stack isn't being used.

[Palmer: Add AQ to the swap, and also some comments.]

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/7e1864332fbc1b993659eab7974da9fe8bf8c128Refgit.kernel.org/stable/c/879fabc5a95401d9bce357e4b1d24ae4a360a81fRefgit.kernel.org/stable/c/ac00301adb19df54f2eae1efc4bad7447c0156ce

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49001?

CVE-2022-49001 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2022-49001?

This vulnerability has a CVSS 3.1 base score of 7.0, 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-2022-49001?

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-2022-49001?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49001 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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