CVE-2026-63859 net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()

What is CVE-2026-63859?

CVE-2026-63859 is a medium-severity vulnerability in Linux kernel, published on 19 Jul 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:

net: airoha: Add missing bits in airoha_qdma_cleanup_tx_queue()

Similar to airoha_qdma_cleanup_rx_queue(), reset DMA TX descriptors in airoha_qdma_cleanup_tx_queue routine. Moreover, reset TX_DMA_IDX to TX_CPU_IDX to notify the NIC the QDMA TX ring is empty.

Which versions are affected by CVE-2026-63859?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-63859?

Apply the vendor's patch.

Is CVE-2026-63859 being exploited?

There is no known exploitation of CVE-2026-63859 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-2026-63859, DEBIAN-CVE-2026-63859, GHSA-w58q-3gfq-pjj2, UBUNTU-CVE-2026-63859.