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

What is CVE-2026-46298?

CVE-2026-46298 is a medium-severity vulnerability in Linux kernel, published on 8 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-362

Which versions are affected by CVE-2026-46298?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-46298?

Apply the vendor's patch.

Is CVE-2026-46298 being exploited?

There is no known exploitation of CVE-2026-46298 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-46298, DEBIAN-CVE-2026-46298, GHSA-qppg-32m7-mvgc, UBUNTU-CVE-2026-46298.