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'.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc5c77ba18ea66aa05441c71e38473efb787705a4 < 6085291a1a5865d4ad70f0e5812d524ebd5d1711affected
LinuxLinuxc5c77ba18ea66aa05441c71e38473efb787705a4 < 2203ef417044b10a8563ade6a17c74183745d72eaffected
LinuxLinuxc5c77ba18ea66aa05441c71e38473efb787705a4 < ae50f8562306a7ea1cf3c9722f97ee244f974729affected
LinuxLinuxc5c77ba18ea66aa05441c71e38473efb787705a4 < fe9e4d0c39311d0f97b024147a0d155333f388b5affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux6.6.108 <= 6.6.*unaffected
LinuxLinux6.12.49 <= 6.12.*unaffected
LinuxLinux6.16.9 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

References