Answer in brief
CVE-2025-38657 records a Unknown severity 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.
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). 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.
Answer in brief
CVE-2025-38657 records a Unknown severity 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.
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). 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.