staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()
Summary
| CVE | CVE-2026-64446 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-25 10:17:29 UTC |
| Updated | 2026-07-25 10:17:29 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001950000 probability, percentile 0.094620000 (date 2026-07-26)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b a94a643a80a84ceb8139061c3d6bf988d75e45a5 git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 2131621986c62c86109ce4d84cf73a73757eb8a6 git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 6f20d7b0ee47c470734a69379b0fc6647c519603 git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 5d7812360abf3143afcbf5efe4ef242448fa1f28 git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 46f66c16a95191d9aca07a72ae6b1252a244e26c git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b b9c4bf133c3c47e23baf4f5403b98a953bf58606 git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 138cd190efd56ab36c9fdd8fef8749d06937f24b git | Not specified |
| CNA | Linux | Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b 5a752a616e756844388a1a45404db9fc29fec655 git | Not specified |
| CNA | Linux | Linux | affected 4.12 | Not specified |
| CNA | Linux | Linux | unaffected 4.12 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.261 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.212 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.96 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.39 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.4 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2-rc3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/b9c4bf133c3c47e23baf4f5403b98a953bf58606 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/46f66c16a95191d9aca07a72ae6b1252a244e26c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2131621986c62c86109ce4d84cf73a73757eb8a6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a94a643a80a84ceb8139061c3d6bf988d75e45a5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5a752a616e756844388a1a45404db9fc29fec655 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6f20d7b0ee47c470734a69379b0fc6647c519603 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5d7812360abf3143afcbf5efe4ef242448fa1f28 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/138cd190efd56ab36c9fdd8fef8749d06937f24b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.