Vulnerability details
CVE-2025-38657
Linux Linux
wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()
CVSS 3.1
7.3High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.3High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.16 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 9dd85e739ce0765f022014c3e0713e1007d7ef60 ≤ v < 417cfa9cc44fbe6bceab786f9a4ee5a210f1288e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 9dd85e739ce0765f022014c3e0713e1007d7ef60 ≤ v < 53cf488927a0f79968f9c03c4d1e00d2a79731c3 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2025-08-22
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.14%
Probability of exploitation in 30 days
4.1%
Percentile (among all CVEs)
Weaknesses (CWE)
- —