CVE-2024-56539

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Source
https://cve.org/CVERecord?id=CVE-2024-56539
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56539.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-56539
Downstream
Related
Published
2024-12-27T14:11:21.487Z
Modified
2026-03-12T02:16:30.095667Z
Summary
wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiexconfigscan()

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 "wildcardssidtlv->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 mwifiexscannetworks+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 WILDCARDSSIDTLVMAXSIZE 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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56539.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Fixed
a09760c513ae0f98c7082a1deace7fb6284ee866
Fixed
1de0ca1d7320a645ba2ee5954f64be08935b002a
Fixed
5fa329c44e1e635da2541eab28b6cdb8464fc8d1
Fixed
581261b2d6fdb4237b24fa13f5a5f87bf2861f2c
Fixed
b466746cfb6be43f9a1457bbee52ade397fb23ea
Fixed
c4698ef8c42e02782604bf4f8a489dbf6b0c1365
Fixed
e2de22e4b6213371d9e76f74a10ce817572a8d74
Fixed
d7774910c5583e61c5fe2571280366624ef48036
Fixed
d241a139c2e9f8a479f25c75ebd5391e6a448500

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56539.json"