{
  "cveId": "CVE-2026-74650",
  "url": "https://patchblox.com/security/cve/CVE-2026-74650",
  "summary": "CVE-2026-74650 is fixed in 31 products on 1 platform, first by DEBIAN-CVE-2026-74650, released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "staging: rtl8723bs: fix OOB read in WMM_param_handler()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  staging: rtl8723bs: fix OOB read in WMM_param_handler()  WMM_param_handler() copies a fixed-size WMM parameter element out of a received information element without checking that the element is long enough, causing an out-of-bounds read for a short WMM IE.  The handler reads sizeof(struct WMM_para_element) (18) bytes at pIE-\u003Edata \u002B 6, so it requires pIE-\u003Elength to be at least 24 (WLAN_WMM_LEN), but it never validates the length. Two of its three callers reach it after matching only the WMM OUI: OnAssocRsp() in rtw_mlme_ext.c matches a 6-byte OUI, and join_cmd_hdl() matches a 4-byte OUI, before calling the handler. A vendor-specific IE carrying the WMM OUI but a length between 6 and 23, placed in an association response or in the IE blob handed to join_cmd_hdl(), passes the OUI check and then makes the memcmp() and memcpy() at pIE-\u003Edata \u002B 6 read past the end of the element. OnAssocRsp() parses a frame received from the AP, so this is reachable from a remote peer.  The remaining caller in rtw_wlan_util.c already guards the handler with \u0022pIE-\u003Elength == WLAN_WMM_LEN\u0022. Move the equivalent check into the handler itself so every caller is covered; the sibling IE handlers in the same parsing loop (HT_caps_handler(), HT_info_handler(), ERP_IE_handler()) likewise bound their accesses by pIE-\u003Elength.",
  "published": "2026-08-22T16:16:38Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00177,
  "epssPercentile": 0.0726,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74650",
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