CVE-2026-53297: net: mana: Guard mana_remove against double invocation

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: 2026-06-26 · updated 2026-10-30
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: net: mana: Guard mana_remove against double invocation If PM resume fails (e.g., mana_attach() returns an error), mana_probe() calls mana_remove(), which tears down the device and sets gd->gdma_context = NULL and gd->driver_data = NULL. However, a failed resume callback does not automatically unbind the driver. When the device is eventually unbound, mana_remove() is invoked a second time. Without a NULL check, it dereferences gc->dev with gc == NULL, causing a kernel panic. Add an early return if gdma_context or driver_data is NULL so the second invocation is harmless. Move the dev = gc->dev assignment after the guard so it cannot dereference NULL.

Affected products

Linux kernel: from 5.16 before 6.18.33; from 6.19 before 7.0.10 — fixed in 6.18.33, 7.0.10
Linux: 5.16 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 6.18.33, 7.0.10; Linux 7.1. Check the vendor advisory for mitigations.

References

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