Answer in brief
CVE-2026-64446 records a High severity (CVSS 7.8) vulnerability in staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie(). 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 7.8. 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:7.2:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <a94a643a80a84ceb8139061c3d6bf988d75e45a5 || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <2131621986c62c86109ce4d84cf73a73757eb8a6 || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <6f20d7b0ee47c470734a69379b0fc6647c519603 || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <5d7812360abf3143afcbf5efe4ef242448fa1f28 || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <46f66c16a95191d9aca07a72ae6b1252a244e26c || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <b9c4bf133c3c47e23baf4f5403b98a953bf58606 || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <138cd190efd56ab36c9fdd8fef8749d06937f24b || >=554c0a3abf216c991c5ebddcdb2c08689ecd290b <5a752a616e756844388a1a45404db9fc29fec655 | a94a643a80a84ceb8139061c3d6bf988d75e45a5, 2131621986c62c86109ce4d84cf73a73757eb8a6, 6f20d7b0ee47c470734a69379b0fc6647c519603, 5d7812360abf3143afcbf5efe4ef242448fa1f28, 46f66c16a95191d9aca07a72ae6b1252a244e26c, b9c4bf133c3c47e23baf4f5403b98a953bf58606, 138cd190efd56ab36c9fdd8fef8749d06937f24b, 5a752a616e756844388a1a45404db9fc29fec655 |
| Linux/Linuxgeneric | 4.12 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie() supplicant_ie is a 256-byte array in struct security_priv. The WPA and WPA2 IE copy paths use: memcpy(padapter->securitypriv.supplicant_ie, &pwpa[0], wpa_ielen + 2); where wpa_ielen is the raw IE length field (u8, 0-255). When a local user supplies a connect request via nl80211 with a crafted WPA IE of length 255, wpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into the adjacent last_mic_err_time field. rtw_parse_wpa_ie() does not prevent this: its length consistency check compares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255 when wpa_ie_len = 257, so the check passes silently. Add explicit bounds checks for both the WPA and WPA2 paths before the memcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the supplicant_ie buffer.
Quoted source text, attributed separately from HOL analysis.