CVE-2023-53251: linux kernel Null Dereference — Fix

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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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.12 — 5.15.121
linux	linux_kernel	5.16 — 6.1.39
linux	linux_kernel	6.2 — 6.3.13
linux	linux_kernel	6.4 — 6.4.4

References

Advisories & Patches

https://git.kernel.org/stable/c/1902f1953b8ba100ee8705cb8a6f1a9795550eca https://git.kernel.org/stable/c/2d690495eb2766d58e25c83676f422219c4fcf18 https://git.kernel.org/stable/c/390e44efcf4d390b5053ad112553155d2d097c73 https://git.kernel.org/stable/c/3b9de981fe7f1c6e07c7b852421ad69be3d4b6c2 https://git.kernel.org/stable/c/f71d0fc407dd028416bec002ddcc62f5acb0346a

Frequently Asked Questions

What is CVE-2023-53251? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53251? +

CVE-2023-53251 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-53251? +

CVE-2023-53251 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53251? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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