cve/2024/CVE-2024-56539.md

### [CVE-2024-56539](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56539)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=3.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()Replace one-element array with a flexible-array member in `structmwifiex_ie_types_wildcard_ssid_params` to fix the following warningon a MT8173 Chromebook (mt8173-elm-hana):[  356.775250] ------------[ cut here ]------------[  356.784543] memcpy: detected field-spanning write (size 6) of single field "wildcard_ssid_tlv->ssid" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1)[  356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex]The "(size 6)" above is exactly the length of the SSID of the networkthis device was connected to. The source of the warning looks like:    ssid_len = user_scan_in->ssid_list[i].ssid_len;    [...]    memcpy(wildcard_ssid_tlv->ssid,           user_scan_in->ssid_list[i].ssid, ssid_len);There is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on thisstruct, but it already didn't account for the size of the one-elementarray, so it doesn't need to be changed.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/cku-heise/euvd-api-doc
- https://github.com/w4zu/Debian_security