CVE-2024-26893

5.5 · MEDIUM

Published Apr 17, 2024 linux CWE-415 EPSS 0.23% (13th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-26893 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:

firmware: arm_scmi: Fix double free in SMC transport cleanup path

When the generic SCMI code tears down a channel, it calls the chan_free

callback function, defined by each transport. Since multiple protocols

might share the same transport_info member, chan_free() might want to

clean up the same member multiple times within the given SCMI transport

implementation. In this case, it is SMC transport. This will lead to a NULL

pointer dereference at the second time:

| scmi_protocol scmi_dev.1: Enabled polling mode TX channel - prot_id:16

| arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.

| arm-scmi firmware:scmi: unable to communicate with SCMI

| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

| Mem abort info:

| ESR = 0x0000000096000004

| EC = 0x25: DABT (current EL), IL = 32 bits

| SET = 0, FnV = 0

| EA = 0, S1PTW = 0

| FS

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	>= 5.8, < 6.1.83	Affected

References

Frequently Asked Questions

What is CVE-2024-26893?

CVE-2024-26893 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-2024-26893?

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-2024-26893?

How can CyberStrike help with CVE-2024-26893?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26893 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

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HackBrowser

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