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CVE-2024-26844

5.5 · MEDIUM
Published Apr 17, 2024 linux EPSS 0.22% (13th pctl)

Overview

CVE-2024-26844 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

block: Fix WARNING in _copy_from_iter

Syzkaller reports a warning in _copy_from_iter because an

iov_iter is supposedly used in the wrong direction. The reason

is that syzcaller managed to generate a request with

a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs

the kernel to copy user buffers into the kernel, read into

the copied buffers and then copy the data back to user space.

Thus the iovec is used in both directions.

Detect this situation in the block layer and construct a new

iterator with the correct direction for the copy-in.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 0, < 6.1.80 Affected

References

Ref git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 Ref git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 Ref git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b Ref git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b Ref git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956 Ref git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6 Ref git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b Ref git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b

Frequently Asked Questions

What is CVE-2024-26844?

CVE-2024-26844 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26844?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26844?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-26844?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26844 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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