cve 2026 63822

The cve 2026 63822 tag covers a double-free vulnerability in the Linux kernel’s Qualcomm ath11k Wi-Fi driver. The flaw can produce a kernel warning and an unstable teardown path after a firmware-related initialization failure. The issue was added to the National Vulnerability Database after kernel.org published fixes for supported stable kernel branches on July 19, 2026. This tag is most relevant to administrators and enthusiasts running Linux on bare-metal systems, dual-boot computers, or Linux virtual machines using PCIe Wi-Fi passthrough. The reported issue does not affect Windows 11’s native Wi-Fi stack or Qualcomm’s Windows driver, so Windows-only systems are outside its described scope.