CVE-2024-56539 (GCVE-0-2024-56539)
Vulnerability from cvelistv5 – Published: 2024-12-27 14:11 – Updated: 2026-05-11 20:54
VLAI
EPSS
VEX
Title
wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
Summary
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.
Severity
5.5 (Medium)
Assigner
References
11 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < a09760c513ae0f98c7082a1deace7fb6284ee866
(git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 1de0ca1d7320a645ba2ee5954f64be08935b002a (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 5fa329c44e1e635da2541eab28b6cdb8464fc8d1 (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 581261b2d6fdb4237b24fa13f5a5f87bf2861f2c (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < b466746cfb6be43f9a1457bbee52ade397fb23ea (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < c4698ef8c42e02782604bf4f8a489dbf6b0c1365 (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < e2de22e4b6213371d9e76f74a10ce817572a8d74 (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < d7774910c5583e61c5fe2571280366624ef48036 (git) Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < d241a139c2e9f8a479f25c75ebd5391e6a448500 (git) |
guessed | |
| Linux | Linux |
Affected:
3.0
Unaffected: 0 , < 3.0 (semver) Unaffected: 4.19.325 , ≤ 4.19.* (semver) Unaffected: 5.4.287 , ≤ 5.4.* (semver) Unaffected: 5.10.231 , ≤ 5.10.* (semver) Unaffected: 5.15.174 , ≤ 5.15.* (semver) Unaffected: 6.1.120 , ≤ 6.1.* (semver) Unaffected: 6.6.64 , ≤ 6.6.* (semver) Unaffected: 6.11.11 , ≤ 6.11.* (semver) Unaffected: 6.12.2 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix) |
guessed |
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}
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"title": "wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()",
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"value": "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."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mwifiex: Se corrige la advertencia de escritura que abarca el campo memcpy() en mwifiex_config_scan() Reemplace la matriz de un elemento con un miembro de matriz flexible en `struct mwifiex_ie_types_wildcard_ssid_params` para corregir la siguiente advertencia en una Chromebook MT8173 (mt8173-elm-hana): [ 356.775250] ------------[ cortar aqu\u00ed ]------------ [ 356.784543] memcpy: se detect\u00f3 escritura que abarca el campo (tama\u00f1o 6) del campo \u00fanico \"wildcard_ssid_tlv-\u0026gt;ssid\" en drivers/net/wireless/marvell/mwifiex/scan.c:904 (tama\u00f1o 1) [ 356.813403] ADVERTENCIA: CPU: 3 PID: 742 en drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex] El \"(tama\u00f1o 6)\" anterior es exactamente la longitud del SSID de la red a la que estaba conectado este dispositivo. La fuente de la advertencia se ve as\u00ed: ssid_len = user_scan_in-\u0026gt;ssid_list[i].ssid_len; [...] memcpy(wildcard_ssid_tlv-\u0026gt;ssid, user_scan_in-\u0026gt;ssid_list[i].ssid, ssid_len); Hay un #define WILDCARD_SSID_TLV_MAX_SIZE que usa sizeof() en esta estructura, pero ya no ten\u00eda en cuenta el tama\u00f1o de la matriz de un elemento, por lo que no es necesario cambiarlo."
}
],
"id": "CVE-2024-56539",
"lastModified": "2026-06-17T08:12:20.500",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2024-12-27T14:15:33.530",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/581261b2d6fdb4237b24fa13f5a5f87bf2861f2c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/5fa329c44e1e635da2541eab28b6cdb8464fc8d1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a09760c513ae0f98c7082a1deace7fb6284ee866"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b466746cfb6be43f9a1457bbee52ade397fb23ea"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/c4698ef8c42e02782604bf4f8a489dbf6b0c1365"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d7774910c5583e61c5fe2571280366624ef48036"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e2de22e4b6213371d9e76f74a10ce817572a8d74"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-11-07T10:46:15+00:00",
"cve": "CVE-2024-56539",
"id": "CVE-2024-56539",
"initial_release_date": "2024-12-27T00:00:00+00:00",
"product_status:known_not_affected": "199",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56539.json",
"version": "3"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.