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CVE-2026-63859
Description
A flaw was found in the Linux kernel's airoha network driver. The airoha_qdma_cleanup_tx_queue() routine, responsible for cleaning up transmit queues, was missing critical steps. This omission could lead to improper resetting of Direct Memory Access (DMA) transmit descriptors and incorrect notification to the network interface controller (NIC) about the state of the transmit ring. Consequently, this could result in resource mismanagement within the network driver.
- Bugzilla 2502310: kernel: net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()
- CWE-459: Incomplete Cleanup
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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