CVE-2024-35883: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe In function pci1xxxx_spi_probe, there is a potential null pointer that may be caused by a failed memory allocation by the function devm_kzalloc. Hence, a null pointer check needs to be added to prevent null pointer dereferencing later in the code. To fix this issue, spi_bus->spi_int[iter] should be checked. The memory allocated by devm_kzalloc will be automatically released, so just directly return -ENOMEM without worrying about memory leaks.

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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	6.2 — 6.6.26
linux	linux_kernel	6.7 — 6.8.5
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/1f886a7bfb3faf4c1021e73f045538008ce7634e https://git.kernel.org/stable/c/4b31a226097cf8cc3c9de5e855d97757fdb2bf06 https://git.kernel.org/stable/c/95e5d9eb26705a9a76d2ef8bcba9ee2e195d653d https://git.kernel.org/stable/c/1f886a7bfb3faf4c1021e73f045538008ce7634e https://git.kernel.org/stable/c/4b31a226097cf8cc3c9de5e855d97757fdb2bf06 https://git.kernel.org/stable/c/95e5d9eb26705a9a76d2ef8bcba9ee2e195d653d

Frequently Asked Questions

What is CVE-2024-35883? +

In the Linux kernel, the following vulnerability has been resolved: spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe In function pci1xxxx_spi_probe, there is a potential null pointer that may be caused by a failed memory allocation by the function devm_kzalloc. Hence, a null pointer check needs to be added to prevent null pointer dereferencing later in the code. To fix this issue, spi_bus->spi_int[iter] should be checked. The memory allocated by devm_kzalloc will be automatically released, so just directly return -ENOMEM without worrying about memory leaks. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-35883? +

CVE-2024-35883 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-2024-35883? +

CVE-2024-35883 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-2024-35883? +

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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CVE-2024-35883