What’s Vulnerable › Vulnerabilities

CVE-2026-74718: devlink: fix net namespace reference leak in reload

• Severity: unknown
• 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: 2026-08-22 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: devlink: fix net namespace reference leak in reload devlink_nl_reload_doit() calls devlink_netns_get(), which returns a net with a held reference. When the requested namespace differs from the current one and the reload action is not DRIVER_REINIT, the function returns -EOPNOTSUPP without releasing the reference. Add the missing put_net() on this error path.

Affected products

• Linux kernel: 6.3 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd
• https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c
• https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f
• https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9
• https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341

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