Answer in brief
CVE-2025-38657 records a High severity (CVSS 7.3) vulnerability in wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch(). 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 7.3. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=9dd85e739ce0765f022014c3e0713e1007d7ef60 <417cfa9cc44fbe6bceab786f9a4ee5a210f1288e || >=9dd85e739ce0765f022014c3e0713e1007d7ef60 <53cf488927a0f79968f9c03c4d1e00d2a79731c3 | 417cfa9cc44fbe6bceab786f9a4ee5a210f1288e, 53cf488927a0f79968f9c03c4d1e00d2a79731c3 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 22, 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: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch() The "link_id" value comes from the user via debugfs. If it's larger than BITS_PER_LONG then that would result in shift wrapping and potentially an out of bounds access later. In fact, we can limit it to IEEE80211_MLD_MAX_NUM_LINKS (15). Fortunately, only root can write to debugfs files so the security impact is minimal.
Quoted source text, attributed separately from HOL analysis.