Vulnerability details
CVE-2025-39864
Linux LinuxSiemens RUGGEDCOM RST2428PSiemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familySiemens SCALANCE XCH328Siemens SCALANCE XCM324Siemens SCALANCE XCM328
wifi: cfg80211: fix use-after-free in cmp_bss()
CVSS 3.1
8.8High
Official description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 5.4 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < a97a9791e455bb0cd5e7a38b5abcb05523d4e21c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < ff040562c10a540b8d851f7f4145fa112977f853 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < 6854476d9e1aeaaf05ebc98d610061c2075db07d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < b7d08929178c16398278613df07ad65cf63cce9d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < 5b7ae04969f822283a95c866967e42b4d75e0eef | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < 912c4b66bef713a20775cfbf3b5e9bd71525c716 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < 26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 ≤ v < a8bb681e879ca3c9f722aa08d3d7ae41c42a8807 | CVEProject cvelistV5 (CNA) |
| Siemens | RUGGEDCOM RST2428P | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XCH328 | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XCM324 | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XCM328 | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XCM332 | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRH334 (24 V DC, 8xFO, CC) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (230 V AC, 12xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (230 V AC, 8xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (24 V DC, 12xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (24 V DC, 8xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (2x230 V AC, 12xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (2x230 V AC, 8xFO) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) | v < V3.3 | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC CN 4100 | v < V5.0 | CVEProject cvelistV5 (CNA) |
References and advisories
12- https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807
- https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c
- https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853
- https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d
- https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d
- https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef
- https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716
- https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
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Details
- Published
- 2025-09-19
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.23%
Probability of exploitation in 30 days
14.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- —