What’s Vulnerable › Vulnerabilities

CVE-2024-55639: net: renesas: rswitch: avoid use-after-put for a device tree node

• Severity: medium (CVSS 5.5 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: 2025-01-11 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: net: renesas: rswitch: avoid use-after-put for a device tree node The device tree node saved in the rswitch_device structure is used at several driver locations. So passing this node to of_node_put() after the first use is wrong. Move of_node_put() for this node to exit paths.

Affected products

• Linux kernel: from 6.3 before 6.6.67; from 6.7 before 6.12.6; 6.13-rc1, 6.13-rc2 — fixed in 6.12.6, 6.6.67

How to fix

Upgrade to a fixed version: Linux kernel 6.12.6, 6.6.67. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/66b7e9f85b8459c823b11e9af69dbf4be5eb6be8
• https://git.kernel.org/stable/c/92007a28f95413058a7268dc84e5f44b700165d1
• https://git.kernel.org/stable/c/bf8c6755f02029d1eddc3ff19b870240f054afc7

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