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CVE-2024-26709

5.5 · MEDIUM

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…

Published Apr 3, 2024EPSS 0.19%

Overview

CVE-2024-26709 is a medium-severity vulnerability. 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, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192Refgit.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6cRefgit.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192Refgit.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26709?

CVE-2024-26709 is a medium-severity vulnerability. 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?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2024-26709?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26709 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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