High severity · published Sep 19, 2025
CVE-2025-39849
wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.1.16 before 6.1.151; 6.2.3 before 6.6.105; 6.7 before 6.12.46; 6.13 before 6.16.6; 6.17; 6.17; +2 more · source: NVD
LI
Linux · Linux
dd43f8f90206054e7da7593de0a334fb2cd0ea88 before 8e751d46336205abc259ed3990e850a9843fb649; c38c701851011c94ce3be1ccb3593678d2933fd8 before e472f59d02c82b511bc43a3f96d62ed08bf4537f; c38c701851011c94ce3be1ccb3593678d2933fd8 before 31229145e6ba5ace3e9391113376fa05b7831ede; c38c701851011c94ce3be1ccb3593678d2933fd8 before 5cb7cab7adf9b1e6a99e2081b0e30e9e59d07523; c38c701851011c94ce3be1ccb3593678d2933fd8 before 62b635dcd69c4fde7ce1de4992d71420a37e51e3; bf3c348c5fdcf00a7eeed04a1b83e454d2dca2e5; +3 more · source: vendor
DL
Debian Linux · Debian
11.0 · source: NVD
SC
SIMATIC CN 4100 · Siemens
before V5.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-39849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-39849
Patch
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
Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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