CVE-2025-39849

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() If the ssid->datalen is more than IEEE80211_MAX_SSID_LEN (32) it would lead to memory corruption so add some bounds checking.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/31229145e6ba5ace3e9391113376fa05b7831ede	Patch
https://git.kernel.org/stable/c/5cb7cab7adf9b1e6a99e2081b0e30e9e59d07523	Patch
https://git.kernel.org/stable/c/62b635dcd69c4fde7ce1de4992d71420a37e51e3	Patch
https://git.kernel.org/stable/c/8e751d46336205abc259ed3990e850a9843fb649	Patch
https://git.kernel.org/stable/c/e472f59d02c82b511bc43a3f96d62ed08bf4537f	Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html

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::::::::
	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::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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: cfg80211: sme: limitar la longitud del SSID en __cfg80211_connect_result() Si ssid->datalen es mayor que IEEE80211_MAX_SSID_LEN (32), llevaría a corrupción de memoria, por lo que se añade alguna comprobación de límites.

Information

Published : 2025-09-19 16:15

Updated : 2026-10-19 21:10

NVD link : CVE-2025-39849

Mitre link : CVE-2025-39849

CVE.ORG link : CVE-2025-39849

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

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