What’s Vulnerable › Vulnerabilities

CVE-2026-98565: net: dsa: mt7530: fix NULL dereference on unbind of MT7531 and MT7621

• 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: 2026-10-18 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mt7530: fix NULL dereference on unbind of MT7531 and MT7621 The core and io supplies are only requested for ID_MT7530: both the devm_regulator_get() in probe and the regulator_enable() in mt7530_setup() are guarded by the switch id, but mt7530_remove() disables them unconditionally. On an MT7621 or an MT7531 both pointers are still NULL from devm_kzalloc(), so rmmod or a sysfs unbind calls regulator_disable() on NULL.

Affected products

• Linux kernel: 5.1 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/62c0e38b2e5034184d4502ce77bd178b29e59b83
• https://git.kernel.org/stable/c/aae2a1f1e3a0ac5eeb439262a2328a2a392413ac
• https://git.kernel.org/stable/c/bd172580e624bac00d83abd5c4320d2e14d853bc
• https://git.kernel.org/stable/c/c2cdef41e0b4d8ed23a5b41e6ad4e64594e055e4
• https://git.kernel.org/stable/c/e9a5298532780ecdd05c3220f3e1e3067b3537c3

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