CVE-2025-39952

HIGH
MEDIUM Priority: 0.02 BB Relevance: 41/100
Published: 2025-10-04 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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'.

Weakness Classification (1)

Affected Software (11)

VendorProductVersion
Linux Linux c5c77ba18ea66aa05441c71e38473efb787705a4 < 5f1578a8684794318a60a022cedbffaa3dc444ce
Linux Linux c5c77ba18ea66aa05441c71e38473efb787705a4 < 6085291a1a5865d4ad70f0e5812d524ebd5d1711
Linux Linux c5c77ba18ea66aa05441c71e38473efb787705a4 < 2203ef417044b10a8563ade6a17c74183745d72e
Linux Linux c5c77ba18ea66aa05441c71e38473efb787705a4 < ae50f8562306a7ea1cf3c9722f97ee244f974729
Linux Linux c5c77ba18ea66aa05441c71e38473efb787705a4 < fe9e4d0c39311d0f97b024147a0d155333f388b5
Linux Linux 4.2
linux linux_kernel 4.2 – 6.6.108
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel 6.17

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.23%
Raw Score 0.002330
Percentile 14.3%
Date 2026-10-30

EPSS Trend

2026-10-30
0.00233
2026-10-29
0.00233

Intelligence Sources

mitre ref →
nvd ref →