CVE-2026-98194

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas_tf: fix UAF in lbtf_free_adapter() lbtf_free_adapter() calls lbtf_free_cmd_buffer() to free the command buffers before calling timer_delete_sync() to wait for the command timer callback. If the timer callback (command_timer_fn) is already running when lbtf_free_cmd_buffer() frees the command array, the callback dereferences priv->cur_cmd->cmdbuf which points to freed memory. Swap the order so that timer_delete_sync() runs first, ensuring any in-flight callback has completed before the command buffers are freed.

References

• https://git.kernel.org/stable/c/04c837d413dc11a91e0275b08b9e35a6c111175e
• https://git.kernel.org/stable/c/2b99bfc5a127ce8cd6a887d82815fc2e712f365b
• https://git.kernel.org/stable/c/3fb3663260ec396f86b733aab9f81fac6669d2fa
• https://git.kernel.org/stable/c/41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46
• https://git.kernel.org/stable/c/b4745d6063758c681d33affca9733bbd356b6ea1