CVE-2024-56539
wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
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 `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.
INFO
Published Date :
Dec. 27, 2024, 2:15 p.m.
Last Modified :
Nov. 3, 2025, 9:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected packages.
- Update the affected kernel package.
Public PoC/Exploit Available at Github
CVE-2024-56539 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-56539.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-56539 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-56539
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-56539 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-56539 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html Added Reference https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html -
Initial Analysis by [email protected]
Oct. 08, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.12 up to (excluding) 6.12.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.11.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.120 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.174 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.231 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.64 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (excluding) 4.19.325 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.287 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/581261b2d6fdb4237b24fa13f5a5f87bf2861f2c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5fa329c44e1e635da2541eab28b6cdb8464fc8d1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a09760c513ae0f98c7082a1deace7fb6284ee866 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b466746cfb6be43f9a1457bbee52ade397fb23ea Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c4698ef8c42e02782604bf4f8a489dbf6b0c1365 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d7774910c5583e61c5fe2571280366624ef48036 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e2de22e4b6213371d9e76f74a10ce817572a8d74 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 27, 2024
Action Type Old Value New Value Added 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 `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. Added Reference https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a Added Reference https://git.kernel.org/stable/c/581261b2d6fdb4237b24fa13f5a5f87bf2861f2c Added Reference https://git.kernel.org/stable/c/5fa329c44e1e635da2541eab28b6cdb8464fc8d1 Added Reference https://git.kernel.org/stable/c/a09760c513ae0f98c7082a1deace7fb6284ee866 Added Reference https://git.kernel.org/stable/c/b466746cfb6be43f9a1457bbee52ade397fb23ea Added Reference https://git.kernel.org/stable/c/c4698ef8c42e02782604bf4f8a489dbf6b0c1365 Added Reference https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500 Added Reference https://git.kernel.org/stable/c/d7774910c5583e61c5fe2571280366624ef48036 Added Reference https://git.kernel.org/stable/c/e2de22e4b6213371d9e76f74a10ce817572a8d74