CVE-2026-43148
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Memory Allocation Failure in Linux Kernel PowerPC SMP

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: Add check for kcalloc() failure in parse_thread_groups() As kcalloc() may fail, check its return value to avoid a NULL pointer dereference when passing it to of_property_read_u32_array().

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Meta Information

Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-07-06
AI Q&A
2026-05-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-43148
EUVD
EUVD-2026-27711

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability occurs in the Linux kernel's powerpc/smp code where the function kcalloc() may fail but its return value was not checked. This can lead to a NULL pointer dereference when the result is passed to the function of_property_read_u32_array(). The issue was fixed by adding a check for kcalloc() failure in parse_thread_groups().

Impact Analysis

If the kcalloc() failure is not handled, it can cause a NULL pointer dereference, which may lead to a kernel crash or system instability on affected Linux systems running on powerpc architectures.

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