CVE-2026-68410

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix memory leak in helper_firmware_cb() helper_firmware_cb() neglects to free the single-stage firmware image after a successful async load, leading to a memory leak in the USB firmware-download path. Fix this memory leak by calling release_firmware() immediately after lbs_fw_loaded() returns. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in the current wireless tree. An x86_64 allyesconfig build showed no new warnings. As we do not have compatible Libertas USB hardware for exercising this firmware-download path, no runtime testing was able to be performed.

• https://git.kernel.org/stable/c/63c2391deefb31e1b801b7f32bd502ca4808639b
• https://git.kernel.org/stable/c/644640cde2fb216e6567de5eee780a38dbc95928
• https://git.kernel.org/stable/c/6cda91bbb8dc3d22ef0323008a12dcf73a5129da
• https://git.kernel.org/stable/c/d497b7566e74920acfe283dd6b2cbf1682890796
• https://git.kernel.org/stable/c/eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c

Published

Aug 10, 2026

Last Modified

Aug 10, 2026

Status

Received

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