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.

Is your site exposed to CVE-2026-98194?

Run a free security scan — no signup, results in seconds.

EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other 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 https://git.kernel.org/stable/c/bbb9a0ab96d44a64529aafc7a16de460a1712f6a https://git.kernel.org/stable/c/e82536aad653e27c8ca7a8e0f6f816bc3f853ec3 https://git.kernel.org/stable/c/f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6

Frequently Asked Questions

What is CVE-2026-98194? +

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.

How do I check if I'm vulnerable to CVE-2026-98194? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.