ghsa-3598-6xhq-v9q3
Vulnerability from github
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 struct
mwifiex_ie_types_wildcard_ssid_params to fix the following warning
on 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 network this 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 this struct, but it already didn't account for the size of the one-element array, so it doesn't need to be changed.
{
"affected": [],
"aliases": [
"CVE-2024-56539"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-27T14:15:33Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()\n\nReplace one-element array with a flexible-array member in `struct\nmwifiex_ie_types_wildcard_ssid_params` to fix the following warning\non a MT8173 Chromebook (mt8173-elm-hana):\n\n[ 356.775250] ------------[ cut here ]------------\n[ 356.784543] memcpy: detected field-spanning write (size 6) of single field \"wildcard_ssid_tlv-\u003essid\" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1)\n[ 356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex]\n\nThe \"(size 6)\" above is exactly the length of the SSID of the network\nthis device was connected to. The source of the warning looks like:\n\n ssid_len = user_scan_in-\u003essid_list[i].ssid_len;\n [...]\n memcpy(wildcard_ssid_tlv-\u003essid,\n user_scan_in-\u003essid_list[i].ssid, ssid_len);\n\nThere is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on this\nstruct, but it already didn\u0027t account for the size of the one-element\narray, so it doesn\u0027t need to be changed.",
"id": "GHSA-3598-6xhq-v9q3",
"modified": "2024-12-27T15:31:53Z",
"published": "2024-12-27T15:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56539"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/581261b2d6fdb4237b24fa13f5a5f87bf2861f2c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5fa329c44e1e635da2541eab28b6cdb8464fc8d1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a09760c513ae0f98c7082a1deace7fb6284ee866"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b466746cfb6be43f9a1457bbee52ade397fb23ea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c4698ef8c42e02782604bf4f8a489dbf6b0c1365"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d7774910c5583e61c5fe2571280366624ef48036"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e2de22e4b6213371d9e76f74a10ce817572a8d74"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.