CVE-2025-39952

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: avoid buffer overflow in WID string configuration Fix the following copy overflow warning identified by Smatch checker. drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 wilc_wlan_parse_response_frame() error: '__memcpy()' 'cfg->s[i]->str' copy overflow (512 vs 65537) This patch introduces size check before accessing the memory buffer. The checks are base on the WID type of received data from the firmware. For WID string configuration, the size limit is determined by individual element size in 'struct wilc_cfg_str_vals' that is maintained in 'len' field of 'struct wilc_cfg_str'.

Impact & exploitability

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/2203ef417044b10a8563ade6a17c74183745d72e ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/2203ef417044b10a8563ade6a17c74183745d72ePatch
• https://git.kernel.org/stable/c/6085291a1a5865d4ad70f0e5812d524ebd5d1711Patch
• https://git.kernel.org/stable/c/ae50f8562306a7ea1cf3c9722f97ee244f974729Patch
• https://git.kernel.org/stable/c/fe9e4d0c39311d0f97b024147a0d155333f388b5Patch