CVE-2023-53251
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-15

Last updated on: 2025-12-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: pcie: fix NULL pointer dereference in iwl_pcie_irq_rx_msix_handler() rxq can be NULL only when trans_pcie->rxq is NULL and entry->entry is zero. For the case when entry->entry is not equal to 0, rxq won't be NULL even if trans_pcie->rxq is NULL. Modify checker to check for trans_pcie->rxq.
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Meta Information
Published
2025-09-15
Last Modified
2025-12-03
Generated
2026-06-16
AI Q&A
2025-09-15
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53251
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.12 (inc) to 5.15.121 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.39 (exc)
linux linux_kernel From 6.2 (inc) to 6.3.13 (exc)
linux linux_kernel From 6.4 (inc) to 6.4.4 (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 iwlwifi driver for PCIe devices. It occurs in the function iwl_pcie_irq_rx_msix_handler() when certain conditions cause the rxq pointer to be NULL, leading to a potential crash or instability in the system. The fix involves modifying the code to properly check the trans_pcie->rxq pointer to prevent dereferencing a NULL pointer.

Impact Analysis

This vulnerability can cause the affected system to crash or become unstable due to a NULL pointer dereference in the wireless driver. This may lead to denial of service or loss of network connectivity on systems using the vulnerable driver.

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