CVE-2024-48881

5.5 · MEDIUM

Published Jan 11, 2025 linux CWE-476 EPSS 0.25% (16th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-48881 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 11, 2025 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:

bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again

Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in

node allocations") leads a NULL pointer deference in cache_set_flush().

1721 if (!IS_ERR_OR_NULL(c->root))

1722 list_add(&c->root->list, &c->btree_cache);

>From the above code in cache_set_flush(), if previous registration code

fails before allocating c->root, it is possible c->root is NULL as what

it is initialized. __bch_btree_node_alloc() never returns NULL but

c->root is possible to be NULL at above line 1721.

This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.

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	>= 4.19.291, < 4.20	Affected

References

Ref git.kernel.org/stable/c/336e30f32ae7c043fde0f6fa21586ff30bea9fe2 Ref git.kernel.org/stable/c/4379c5828492a4c2a651c8f826a01453bd2b80b0 Ref git.kernel.org/stable/c/5202391970ffbf81975251b3526b890ba027b715 Ref git.kernel.org/stable/c/5e0e913624bcd24f3de414475018d3023f060ee1 Ref git.kernel.org/stable/c/b2e382ae12a63560fca35050498e19e760adf8c0 Ref git.kernel.org/stable/c/cc05aa2c0117e20fa25a3c0d915f98b8f2e78667 Ref git.kernel.org/stable/c/fb5fee35bdd18316a84b5f30881a24e1415e1464 Ref lists.debian.org/debian-lts-announce/2025/03/msg00001.html Ref lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-48881?

CVE-2024-48881 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 11, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-48881?

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-2024-48881?

How can CyberStrike help with CVE-2024-48881?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-48881 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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