CVE-2023-53238: linux kernel Out-of-bounds Read — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe() The size of array 'priv->ports[]' is INNO_PHY_PORT_NUM. In the for loop, 'i' is used as the index for array 'priv->ports[]' with a check (i > INNO_PHY_PORT_NUM) which indicates that INNO_PHY_PORT_NUM is allowed value for 'i' in the same loop. This > comparison needs to be changed to >=, otherwise it potentially leads to an out of bounds write on the next iteration through the loop

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CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.17 — 4.19.291
linux	linux_kernel	4.20 — 5.4.253
linux	linux_kernel	5.5 — 5.10.190
linux	linux_kernel	5.11 — 5.15.124
linux	linux_kernel	5.16 — 6.1.43
linux	linux_kernel	6.2 — 6.4.8
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/01cb355bb92e8fcf8306e11a4774d610c5864e39 https://git.kernel.org/stable/c/13c088cf3657d70893d75cf116be937f1509cc0f https://git.kernel.org/stable/c/195e806b2afb0bad6470c9094f7e45e0cf109ee0 https://git.kernel.org/stable/c/2843a2e703f5cb85c9eeca11b7ee90861635a010 https://git.kernel.org/stable/c/6d8a71e4c3a2fa4960cc50996e76a42b62fab677 https://git.kernel.org/stable/c/ad249aa3c38f329f91fba8b4b3cd087e79fb0ce8 https://git.kernel.org/stable/c/ce69eac840db0b559994dc4290fce3d7c0d7bccd

Frequently Asked Questions

What is CVE-2023-53238? +

In the Linux kernel, the following vulnerability has been resolved: phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe() The size of array 'priv->ports[]' is INNO_PHY_PORT_NUM. In the for loop, 'i' is used as the index for array 'priv->ports[]' with a check (i > INNO_PHY_PORT_NUM) which indicates that INNO_PHY_PORT_NUM is allowed value for 'i' in the same loop. This > comparison needs to be changed to >=, otherwise it potentially leads to an out of bounds write on the next iteration through the loop It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-53238? +

CVE-2023-53238 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53238? +

CVE-2023-53238 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-2023-53238? +

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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