CVE-2023-53332
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-16

Last updated on: 2025-12-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask() If ipi_send_{mask|single}() is called with an invalid interrupt number, all the local variables there will be NULL. ipi_send_verify() which is invoked from these functions does verify its 'data' parameter, resulting in a kernel oops in irq_data_get_affinity_mask() as the passed NULL pointer gets dereferenced. Add a missing NULL pointer check in ipi_send_verify()... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
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Meta Information
Published
2025-09-16
Last Modified
2025-12-10
Generated
2026-06-16
AI Q&A
2025-09-16
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53332
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 4.6 (inc) to 6.1.18 (exc)
linux linux_kernel From 6.2 (inc) to 6.2.5 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability is a NULL pointer dereference in the Linux kernel's genirq subsystem, specifically in the irq_data_get_affinity_mask() function. When certain functions (ipi_send_mask or ipi_send_single) are called with an invalid interrupt number, local variables become NULL. Although ipi_send_verify() checks its 'data' parameter, it misses a NULL pointer check, leading to a kernel oops (crash) when the NULL pointer is dereferenced.

Impact Analysis

This vulnerability can cause the Linux kernel to crash (kernel oops) when invalid interrupt numbers are used in specific inter-processor interrupt functions. This can lead to system instability or denial of service.

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