What’s Vulnerable › Vulnerabilities

CVE-2026-46298: pseries/papr-hvpipe: Fix race with interrupt handler

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-08 · updated 2026-10-15
• Weakness: CWE-362

Description

In the Linux kernel, the following vulnerability has been resolved: pseries/papr-hvpipe: Fix race with interrupt handler While executing ->ioctl handler or ->release handler, if an interrupt fires on the same cpu, then we can enter into a deadlock. This patch fixes both these handlers to take spin_lock_irq{save|restore} versions of the lock to prevent this deadlock.

Affected products

• Linux kernel: from 6.18 before 7.0.7; 7.1-rc1, 7.1-rc2 — fixed in 7.0.7

How to fix

Upgrade to a fixed version: Linux kernel 7.0.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/342c966f81cfc3cb6c297e80b37a9f3a5d637d2c
• https://git.kernel.org/stable/c/7a4f0846ee6cc8cf44ae0046ed42e3259d1dd45b
• https://git.kernel.org/stable/c/b33d6f5da16e0eec95b933342812c689cdfcec03

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