CVE-2025-39957

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: increase scan_ies_len for S1G Currently the S1G capability element is not taken into account for the scan_ies_len, which leads to a buffer length validation failure in ieee80211_prep_hw_scan() and subsequent WARN in __ieee80211_start_scan(). This prevents hw scanning from functioning. To fix ensure we accommodate for the S1G capability length.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0dbad5f5549e54ac269cc04ce89f212892a98cab	Patch
https://git.kernel.org/stable/c/32adb020b0c32939da1322dcc87fc0ae2bc935d1	Patch
https://git.kernel.org/stable/c/7e2f3213e85eba00acb4cfe6d71647892d63c3a1	Patch
https://git.kernel.org/stable/c/93e063f15e17acb8cd6ac90c8f0802c2624e1a74	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc4::::::

History

19 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: wifi: mac80211: aumentar scan_ies_len para S1G Actualmente, el elemento de capacidad S1G no se tiene en cuenta para el scan_ies_len, lo que lleva a un fallo de validación de longitud de búfer en ieee80211_prep_hw_scan() y a un WARN posterior en __ieee80211_start_scan(). Esto impide que el escaneo de hardware funcione. Para corregirlo, nos aseguramos de acomodar la longitud de capacidad S1G.

Information

Published : 2025-10-09 10:15

Updated : 2026-10-19 21:10

NVD link : CVE-2025-39957

Mitre link : CVE-2025-39957

CVE.ORG link : CVE-2025-39957

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2025-39957", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39957", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:55:06.430509Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0333a81bc83431d7f90391d38aa09e856c5e5b25", "lessThan": "93e063f15e17acb8cd6ac90c8f0802c2624e1a74", "versionType": "git"}, {"status": "affected", "version": "0333a81bc83431d7f90391d38aa09e856c5e5b25", "lessThan": "32adb020b0c32939da1322dcc87fc0ae2bc935d1", "versionType": "git"}, {"status": "affected", "version": "0333a81bc83431d7f90391d38aa09e856c5e5b25", "lessThan": "0dbad5f5549e54ac269cc04ce89f212892a98cab", "versionType": "git"}, {"status": "affected", "version": "0333a81bc83431d7f90391d38aa09e856c5e5b25", "lessThan": "7e2f3213e85eba00acb4cfe6d71647892d63c3a1", "versionType": "git"}], "programFiles": ["net/mac80211/main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.4"}, {"status": "unaffected", "version": "0", "lessThan": "6.4", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.108", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.49", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.9", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/mac80211/main.c"], "defaultStatus": "affected"}]}], "published": "2025-10-09T10:15:37.133", "references": [{"url": "https://git.kernel.org/stable/c/0dbad5f5549e54ac269cc04ce89f212892a98cab", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/32adb020b0c32939da1322dcc87fc0ae2bc935d1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7e2f3213e85eba00acb4cfe6d71647892d63c3a1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/93e063f15e17acb8cd6ac90c8f0802c2624e1a74", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: increase scan_ies_len for S1G\n\nCurrently the S1G capability element is not taken into account\nfor the scan_ies_len, which leads to a buffer length validation\nfailure in ieee80211_prep_hw_scan() and subsequent WARN in\n__ieee80211_start_scan(). This prevents hw scanning from functioning.\nTo fix ensure we accommodate for the S1G capability length."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: mac80211: aumentar scan_ies_len para S1G\n\nActualmente, el elemento de capacidad S1G no se tiene en cuenta para el scan_ies_len, lo que lleva a un fallo de validaci\u00f3n de longitud de b\u00fafer en ieee80211_prep_hw_scan() y a un WARN posterior en __ieee80211_start_scan(). Esto impide que el escaneo de hardware funcione. Para corregirlo, nos aseguramos de acomodar la longitud de capacidad S1G."}], "lastModified": "2026-10-19T21:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D56D8BF0-6D05-4B36-BAB4-759F12521CF6", "versionEndExcluding": "6.6.108", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAA033E9-A2C5-4976-A83E-9804D8FB827F", "versionEndExcluding": "6.12.49", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "638DD910-1189-4F5E-98BF-2D436B695112", "versionEndExcluding": "6.16.9", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}