CVE-2024-26709

5.5 · MEDIUM

Published Apr 3, 2024 linux EPSS 0.19% (9th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-26709 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 3, 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:

powerpc/iommu: Fix the missing iommu_group_put() during platform domain attach

The function spapr_tce_platform_iommu_attach_dev() is missing to call

iommu_group_put() when the domain is already set. This refcount leak

shows up with BUG_ON() during DLPAR remove operation as:

KernelBug: Kernel bug in state 'None': kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!

Oops: Exception in kernel mode, sig: 5 [#1]

LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries

<snip>

Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries

NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000

REGS: c0000013aed5f840 TRAP: 0700 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e)

MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 44002402 XER: 20040000

CFAR: c000000000a0d170 IRQMASK: 0

...

NIP iommu_reconfig_notifier+0x94/0x200

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	>= 6.7, < 6.7.6	Affected

References

Ref git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192 Ref git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c Ref git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192 Ref git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c

Frequently Asked Questions

What is CVE-2024-26709?

CVE-2024-26709 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 3, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26709?

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-2024-26709?

How can CyberStrike help with CVE-2024-26709?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26709 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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