CVE-2024-26942: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net: phy: qcom: at803x: fix kernel panic with at8031_probe On reworking and splitting the at803x driver, in splitting function of at803x PHYs it was added a NULL dereference bug where priv is referenced before it's actually allocated and then is tried to write to for the is_1000basex and is_fiber variables in the case of at8031, writing on the wrong address. Fix this by correctly setting priv local variable only after at803x_probe is called and actually allocates priv in the phydev struct.

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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

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.8.3
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/6a4aee277740d04ac0fd54cfa17cc28261932ddc https://git.kernel.org/stable/c/a8a296ad9957b845b89bcf48be1cf8c74875ecc3 https://git.kernel.org/stable/c/6a4aee277740d04ac0fd54cfa17cc28261932ddc https://git.kernel.org/stable/c/a8a296ad9957b845b89bcf48be1cf8c74875ecc3

Frequently Asked Questions

What is CVE-2024-26942? +

In the Linux kernel, the following vulnerability has been resolved: net: phy: qcom: at803x: fix kernel panic with at8031_probe On reworking and splitting the at803x driver, in splitting function of at803x PHYs it was added a NULL dereference bug where priv is referenced before it's actually allocated and then is tried to write to for the is_1000basex and is_fiber variables in the case of at8031, writing on the wrong address. Fix this by correctly setting priv local variable only after at803x_probe is called and actually allocates priv in the phydev struct. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26942? +

CVE-2024-26942 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-2024-26942? +

CVE-2024-26942 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-2024-26942? +

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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