What’s Vulnerable › Vulnerabilities

CVE-2025-21934: rapidio: fix an API misues when rio_add_net() fails

• Severity: high (CVSS 7.8 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: 2025-04-01 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: rapidio: fix an API misues when rio_add_net() fails rio_add_net() calls device_register() and fails when device_register() fails. Thus, put_device() should be used rather than kfree(). Add "mport->net = NULL;" to avoid a use after free issue.

Affected products

• Linux kernel: from 4.6 before 5.4.291; from 5.5 before 5.10.235; from 5.11 before 5.15.179; from 5.16 before 6.1.131; from 6.2 before 6.6.83; from 6.7 before 6.12.19 — fixed in 5.10.235, 5.15.179, 5.4.291, 6.1.131, 6.12.19, 6.13.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.235, 5.15.179, 5.4.291, 6.1.131. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990
• https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898
• https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5
• https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a
• https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269
• https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466
• https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36
• https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
• https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

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