What’s Vulnerable › Vulnerabilities

CVE-2026-72133: spi: uniphier: Fix completion initialization order before devm_request_irq()

• Severity: high (CVSS 8.4 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: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: spi: uniphier: Fix completion initialization order before devm_request_irq() The driver calls devm_request_irq() before initializing the completion used by the interrupt handler. Because the interrupt may occur immediately after devm_request_irq(), the handler may execute before init_completion(). This may result in calling complete() on an uninitialized completion, causing undefined behavior. This has been observed with KASAN. Fix this by initializing the completion before registering the IRQ.

Affected products

• Linux kernel: 4.19 — 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/077a7bc1c32d3da9670c5e282ea3e5ac8a94be59
• https://git.kernel.org/stable/c/49f6705d80b5e6175d8435d9c72b66bd516a8e89
• https://git.kernel.org/stable/c/82a5746c4c9e94f6f816ec7edea6ddc24417c6a5
• https://git.kernel.org/stable/c/8b5798ce0007874c14611b8ee4ce6c749855260e
• https://git.kernel.org/stable/c/b9fcf0db433d79648ace74bc2b8b88f91e306304
• https://git.kernel.org/stable/c/d44b828eb551bd59ba9f22457825cc3db3a39fc1
• https://git.kernel.org/stable/c/f3ad1c87d8201e54b66bd6072442f0b5d5a308ee
• https://git.kernel.org/stable/c/f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17

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