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CVE-2025-22078: staging: vchiq_arm: Fix possible NPR of keep-alive thread

• 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: 2025-04-16 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: staging: vchiq_arm: Fix possible NPR of keep-alive thread In case vchiq_platform_conn_state_changed() is never called or fails before driver removal, ka_thread won't be a valid pointer to a task_struct. So do the necessary checks before calling kthread_stop to avoid a crash.

Affected products

• Linux kernel: from 6.11 before 6.12.23; from 6.13 before 6.13.11; from 6.14 before 6.14.2 — fixed in 6.12.23, 6.13.11, 6.14.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.23, 6.13.11, 6.14.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1817c4b85011998604e5ff9a80a6e01adb7e7e81
• https://git.kernel.org/stable/c/3db89bc6d973e2bcaa852f6409c98c228f39a926
• https://git.kernel.org/stable/c/a915c896f95a989a7759a73f8c064f5dc3775175
• https://git.kernel.org/stable/c/bd38395b901327f77a82112f006240de22cf2ceb

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