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CVE-2026-46141
Description
A flaw was found in the Linux kernel's powerpc/xive interrupt controller. This vulnerability, identified as a kernel memory leak (kmemleak), occurs when allocating Message Signaled Interrupts eXtended (MSI-X) vectors for NVMe devices. Due to an incorrect lookup of interrupt data, the xive_irq_data structure is not properly freed, leading to a gradual consumption of kernel memory. Over time, this memory leak could potentially lead to system instability or a denial of service (DoS).
- Bugzilla 2482625: kernel: powerpc/xive: fix kmemleak caused by incorrect chip_data lookup
- CWE-763: Release of Invalid Pointer or Reference
Frequently Asked Questions
For more information, see https://access.redhat.com/solutions/762393.
- "Under investigation" doesn't necessarily mean that the product is affected by this vulnerability. It only means that our Analysis Team is still working on determining whether the product is affected and how it is affected.
- The term 'Affected' means that our Analysis team has determined that this product, such as Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to address this issue in the near future. This includes all minor releases of this product unless noted otherwise in the Statement text.
Available options depend mostly on the Impact of the vulnerability and the current Life Cycle phase of your product. Overall, you have the following options:
- Upgrade to a supported product version that includes a fix for this vulnerability (recommended).
- Apply a mitigation (if one exists).
- Customers with the Technical Account Manager (TAM) RHEL Security Select Add-on can review this CVE directly with their TAM.
Available options depend mostly on the Impact of the vulnerability and the current Life Cycle phase of your product. Overall, you have the following options:
- Apply a mitigation (if one exists).
- Red Hat Engineering focuses on addressing high-priority issues based on the impact and product lifecycle expectations. Therefore, lower-priority issues will not receive immediate fixes.
- Customers with the technical account manager (TAM) RHEL Security Select Add-on can review this CVE directly with their TAM.
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