CVE-2025-39849: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()

Modified

AliasesUBUNTU-CVE-2025-39849DEBIAN-CVE-2025-39849

Published 19-09-2025Last modified 05-08-2026

Vulnerability summary

CVE-2025-39849 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.8% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

8.8/10

010

High · v3.1 (CVE.org)

EPSS score

0.22%

0%100%

Low · +0.01 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

19-09-2025
PublishedVulnerability first disclosed.
05-08-2026
Last modifiedVulnerability information updated.

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 metrics

5 scores · 4 sources · 2 versions

v4.08.6v3.18.8

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu122 products

linux< 6.8.0-106.106
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 6.8.0-1050.53
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)

linux-aws-5.13All versions (No fix recorded)
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.14All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-6.8< 6.8.0-1050.53~22.04.1
linux-aws-fips< 6.8.0-1050.53+fips1
linux-azureAll versions (No fix recorded) | < 6.8.0-1051.57
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.11All versions (No fix recorded)
linux-azure-6.14All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-6.8< 6.8.0-1051.57~22.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 6.8.0-1058.65
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.14All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fde-6.8< 6.8.0-1058.65~22.04.1
linux-azure-fips< 6.8.0-1052.58+fips1
linux-azure-nvidiaAll versions (No fix recorded)
linux-azure-nvidia-6.14All versions (No fix recorded)
linux-bluefield< 6.8.0-1017.21
linux-fips< 6.8.0-106.106+fips1
linux-gcpAll versions (No fix recorded) | < 6.8.0-1052.55
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.11All versions (No fix recorded)
linux-gcp-6.14All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-6.8< 6.8.0-1052.55~22.04.1
linux-gcp-fips< 6.8.0-1052.55+fips1
linux-gkeAll versions (No fix recorded) | < 6.8.0-1048.53
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeopAll versions (No fix recorded) | < 6.8.0-1035.38
linux-gkeop-5.15All versions (No fix recorded)
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.11All versions (No fix recorded)
linux-hwe-6.14All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-6.8< 6.8.0-106.106~22.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 6.8.0-1049.49
linux-ibm-6.8< 6.8.0-1049.49~22.04.1
linux-intelAll versions (No fix recorded)
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-lowlatency< 6.8.0-106.106.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.11All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lowlatency-hwe-6.8< 6.8.0-106.106.1~22.04.1
linux-nvidia< 6.8.0-1049.52
linux-nvidia-6.11All versions (No fix recorded)
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-6.8< 6.8.0-1049.52~22.04.1
linux-nvidia-lowlatency< 6.8.0-1049.52.1
linux-nvidia-tegra< 6.8.0-1020.20
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.11All versions (No fix recorded)
linux-oem-6.14All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8All versions (No fix recorded)
linux-oracle< 6.8.0-1047.48
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.14All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-oracle-6.8< 6.8.0-1047.48~22.04.1
linux-raspi< 6.8.0-1050.54
linux-raspi-realtimeAll versions (No fix recorded) | < 6.8.0-2040.41
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 6.8.1-1045.46
linux-realtime-6.14All versions (No fix recorded)
linux-realtime-6.8< 6.8.1-1045.46~22.04.1
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.14All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-riscv-6.8< 6.8.0-106.106~22.04.1
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinx< 6.8.0-1028.29

Show all 122

Debian2 products

linux< 6.1.153-1 | < 6.12.48-1 | < 6.16.6-1
debian_linuxEOL11.0

Linux2 products

linux≥ dd43f8f90206054e7da7593de0a334fb2cd0ea88, < 8e751d46336205abc259ed3990e850a9843fb649 | ≥ c38c701851011c94ce3be1ccb3593678d2933fd8, < e472f59d02c82b511bc43a3f96d62ed08bf4537f | ≥ c38c701851011c94ce3be1ccb3593678d2933fd8, < 31229145e6ba5ace3e9391113376fa05b7831ede | ≥ c38c701851011c94ce3be1ccb3593678d2933fd8, < 5cb7cab7adf9b1e6a99e2081b0e30e9e59d07523 | ≥ c38c701851011c94ce3be1ccb3593678d2933fd8, < 62b635dcd69c4fde7ce1de4992d71420a37e51e3 | bf3c348c5fdcf00a7eeed04a1b83e454d2dca2e5 | ≥ 6.1.16, < 6.1.151 | ≥ 6.2.3, < 6.3 | 6.3
linux_kernel≥ 6.1.16, < 6.1.151 | ≥ 6.2.3, < 6.6.105 | ≥ 6.7, < 6.12.46 | ≥ 6.13, < 6.16.6 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4

3 vendors · 126 products