CVE-2024-56539wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
- 5.5MediumCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 77% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 17 months later
· 17 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < a09760c513ae0f98c7082a1deace7fb6284ee866
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < 1de0ca1d7320a645ba2ee5954f64be08935b002a
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < 5fa329c44e1e635da2541eab28b6cdb8464fc8d1
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < 581261b2d6fdb4237b24fa13f5a5f87bf2861f2c
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < b466746cfb6be43f9a1457bbee52ade397fb23ea
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < c4698ef8c42e02782604bf4f8a489dbf6b0c1365
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < e2de22e4b6213371d9e76f74a10ce817572a8d74
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < d7774910c5583e61c5fe2571280366624ef48036
- affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e – < d241a139c2e9f8a479f25c75ebd5391e6a448500
- affected 3.0
- unaffected < 3.0
- unaffected 4.19.325 – ≤ 4.19.*
- unaffected 5.4.287 – ≤ 5.4.*
- unaffected 5.10.231 – ≤ 5.10.*
- unaffected 5.15.174 – ≤ 5.15.*
- unaffected 6.1.120 – ≤ 6.1.*
- unaffected 6.6.64 – ≤ 6.6.*
- unaffected 6.11.11 – ≤ 6.11.*
- unaffected 6.12.2 – ≤ 6.12.*
- unaffected 6.13 – ≤ *
References
References11
- https://git.kernel.org/stable/c/a09760c513ae0f98c7082a1deace7fb6284ee866 (opens in a new tab)
- https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a (opens in a new tab)
- https://git.kernel.org/stable/c/5fa329c44e1e635da2541eab28b6cdb8464fc8d1 (opens in a new tab)
- https://git.kernel.org/stable/c/581261b2d6fdb4237b24fa13f5a5f87bf2861f2c (opens in a new tab)
- https://git.kernel.org/stable/c/b466746cfb6be43f9a1457bbee52ade397fb23ea (opens in a new tab)
- https://git.kernel.org/stable/c/c4698ef8c42e02782604bf4f8a489dbf6b0c1365 (opens in a new tab)
- https://git.kernel.org/stable/c/e2de22e4b6213371d9e76f74a10ce817572a8d74 (opens in a new tab)
- https://git.kernel.org/stable/c/d7774910c5583e61c5fe2571280366624ef48036 (opens in a new tab)
- https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-53187 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-56539)Record last updated .