Answer in brief
CVE-2025-39957 records a High severity (CVSS 7.1) vulnerability in wifi: mac80211: increase scan_ies_len for S1G. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0333a81bc83431d7f90391d38aa09e856c5e5b25 <93e063f15e17acb8cd6ac90c8f0802c2624e1a74 || >=0333a81bc83431d7f90391d38aa09e856c5e5b25 <32adb020b0c32939da1322dcc87fc0ae2bc935d1 || >=0333a81bc83431d7f90391d38aa09e856c5e5b25 <0dbad5f5549e54ac269cc04ce89f212892a98cab || >=0333a81bc83431d7f90391d38aa09e856c5e5b25 <7e2f3213e85eba00acb4cfe6d71647892d63c3a1 | 93e063f15e17acb8cd6ac90c8f0802c2624e1a74, 32adb020b0c32939da1322dcc87fc0ae2bc935d1, 0dbad5f5549e54ac269cc04ce89f212892a98cab, 7e2f3213e85eba00acb4cfe6d71647892d63c3a1 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Oct 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 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: mac80211: increase scan_ies_len for S1G Currently the S1G capability element is not taken into account for the scan_ies_len, which leads to a buffer length validation failure in ieee80211_prep_hw_scan() and subsequent WARN in __ieee80211_start_scan(). This prevents hw scanning from functioning. To fix ensure we accommodate for the S1G capability length.
Quoted source text, attributed separately from HOL analysis.