CVE-2023-53238: phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-15 · updated 2026-06-17
Weakness: CWE-125

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

Affected products

Linux kernel: from 4.17 before 4.19.291; from 4.20 before 5.4.253; from 5.5 before 5.10.190; from 5.11 before 5.15.124; from 5.16 before 6.1.43; from 6.2 before 6.4.8 — fixed in 4.19.291, 5.10.190, 5.15.124, 5.4.253, 6.1.43, 6.4.8

How to fix

Upgrade to a fixed version: Linux kernel 4.19.291, 5.10.190, 5.15.124, 5.4.253. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-53238 or the next vulnerability affects your stack