CVE-2024-26783

5.5 · MEDIUM

Published Apr 4, 2024 linux EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-26783 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 4, 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:

mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index

With numa balancing on, when a numa system is running where a numa node

doesn't have its local memory so it has no managed zones, the following

oops has been observed. It's because wakeup_kswapd() is called with a

wrong zone index, -1. Fixed it by checking the index before calling

wakeup_kswapd().

> BUG: unable to handle page fault for address: 00000000000033f3

> #PF: supervisor read access in kernel mode

> #PF: error_code(0x0000) - not-present page

> PGD 0 P4D 0

> Oops: 0000 [#1] PREEMPT SMP NOPTI

> CPU: 2 PID: 895 Comm: masim Not tainted 6.6.0-dirty #255

> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS

> rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

> RIP: 0010:wakeup_kswapd (./linux/mm/vmscan.c:7812)

> Code: (omitted)

> RSP: 0000:ffffc90004257d58 EFLAGS: 00010286

> RAX: ffffffffffffffff RBX: ffff88883fff0480 RCX: 0000

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	>= 5.18, < 6.6.22	Affected

References

Ref git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974 Ref git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080 Ref git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e Ref git.kernel.org/stable/c/e5ec1c24e71dbf144677a975d6ba91043c2193db Ref git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974 Ref git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080 Ref git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e Ref lists.debian.org/debian-lts-announce/2025/08/msg00010.html Ref cert-portal.siemens.com/productcert/html/ssa-019113.html

Frequently Asked Questions

What is CVE-2024-26783?

CVE-2024-26783 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 4, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26783?

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-2024-26783?

How can CyberStrike help with CVE-2024-26783?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26783 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.

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