Answer in brief
CVE-2025-39864 records a Unknown severity vulnerability in wifi: cfg80211: fix use-after-free in cmp_bss(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-39864 records a Unknown severity vulnerability in wifi: cfg80211: fix use-after-free in cmp_bss(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <a8bb681e879ca3c9f722aa08d3d7ae41c42a8807 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <a97a9791e455bb0cd5e7a38b5abcb05523d4e21c || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <ff040562c10a540b8d851f7f4145fa112977f853 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <6854476d9e1aeaaf05ebc98d610061c2075db07d || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <b7d08929178c16398278613df07ad65cf63cce9d || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <5b7ae04969f822283a95c866967e42b4d75e0eef || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <912c4b66bef713a20775cfbf3b5e9bd71525c716 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 | a8bb681e879ca3c9f722aa08d3d7ae41c42a8807, a97a9791e455bb0cd5e7a38b5abcb05523d4e21c, ff040562c10a540b8d851f7f4145fa112977f853, 6854476d9e1aeaaf05ebc98d610061c2075db07d, b7d08929178c16398278613df07ad65cf63cce9d, 5b7ae04969f822283a95c866967e42b4d75e0eef, 912c4b66bef713a20775cfbf3b5e9bd71525c716, 26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <a8bb681e879ca3c9f722aa08d3d7ae41c42a8807 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <a97a9791e455bb0cd5e7a38b5abcb05523d4e21c || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <ff040562c10a540b8d851f7f4145fa112977f853 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <6854476d9e1aeaaf05ebc98d610061c2075db07d || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <b7d08929178c16398278613df07ad65cf63cce9d || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <5b7ae04969f822283a95c866967e42b4d75e0eef || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <912c4b66bef713a20775cfbf3b5e9bd71525c716 || >=3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 <26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 | a8bb681e879ca3c9f722aa08d3d7ae41c42a8807, a97a9791e455bb0cd5e7a38b5abcb05523d4e21c, ff040562c10a540b8d851f7f4145fa112977f853, 6854476d9e1aeaaf05ebc98d610061c2075db07d, b7d08929178c16398278613df07ad65cf63cce9d, 5b7ae04969f822283a95c866967e42b4d75e0eef, 912c4b66bef713a20775cfbf3b5e9bd71525c716, 26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.