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CVE-2026-98194

Unknown

Last modified

CVE-2026-98194 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 06b16ae5319251c26377afcb401e46056d5673f4, < 3fb3663260ec396f86b733aab9f81fac6669d2fa; >= 06b16ae5319251c26377afcb401e46056d5673f4, < f6c3fa0d17ca0c9e6033bb45f52e33b27a9a40e6; >= 06b16ae5319251c26377afcb401e46056d5673f4, < b4745d6063758c681d33affca9733bbd356b6ea1; >= 06b16ae5319251c26377afcb401e46056d5673f4, < 41b1a4d545ec348b7d5324b6d4f4c6a3e0326d46; >= 06b16ae5319251c26377afcb401e46056d5673f4, < 2b99bfc5a127ce8cd6a887d82815fc2e712f365b; >= 06b16ae5319251c26377afcb401e46056d5673f4, < e82536aad653e27c8ca7a8e0f6f816bc3f853ec3; >= 06b16ae5319251c26377afcb401e46056d5673f4, < 04c837d413dc11a91e0275b08b9e35a6c111175e; >= 06b16ae5319251c26377afcb401e46056d5673f4, < bbb9a0ab96d44a64529aafc7a16de460a1712f6a
LinuxLinux2.6.28

References

Timeline

Published
Last Modified
Status
Received

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 severe is CVE-2026-98194?
Severity scoring for CVE-2026-98194 is pending analysis.
How do I fix CVE-2026-98194?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST