CVE-2023-53717
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Vulnerability report for CVE-2023-53717, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-10-22

Last updated on: 2025-10-22

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback() Fix a stack-out-of-bounds write that occurs in a WMI response callback function that is called after a timeout occurs in ath9k_wmi_cmd(). The callback writes to wmi->cmd_rsp_buf, a stack-allocated buffer that could no longer be valid when a timeout occurs. Set wmi->last_seq_id to 0 when a timeout occurred. Found by a modified version of syzkaller. BUG: KASAN: stack-out-of-bounds in ath9k_wmi_ctrl_rx Write of size 4 Call Trace: memcpy ath9k_wmi_ctrl_rx ath9k_htc_rx_msg ath9k_hif_usb_reg_in_cb __usb_hcd_giveback_urb usb_hcd_giveback_urb dummy_timer call_timer_fn run_timer_softirq __do_softirq irq_exit_rcu sysvec_apic_timer_interrupt

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Meta Information

Published
2025-10-22
Last Modified
2025-10-22
Generated
2026-07-06
AI Q&A
2025-10-22
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel *
atheros ath9k *

Helpful Resources

Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a stack-out-of-bounds write in the Linux kernel's ath9k wireless driver. It occurs in a WMI response callback function called after a timeout in ath9k_wmi_cmd(). The callback writes to a stack-allocated buffer that may no longer be valid due to the timeout, potentially causing memory corruption.

Impact Analysis

The vulnerability can lead to memory corruption in the kernel, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code with kernel privileges.

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