CVE-2026-64446 (GCVE-0-2026-64446)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-08-17 04:55
VLAI
Title
staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < a94a643a80a84ceb8139061c3d6bf988d75e45a5 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 2131621986c62c86109ce4d84cf73a73757eb8a6 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 6f20d7b0ee47c470734a69379b0fc6647c519603 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 5d7812360abf3143afcbf5efe4ef242448fa1f28 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 46f66c16a95191d9aca07a72ae6b1252a244e26c (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < b9c4bf133c3c47e23baf4f5403b98a953bf58606 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 138cd190efd56ab36c9fdd8fef8749d06937f24b (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 5a752a616e756844388a1a45404db9fc29fec655 (git)
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Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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        "id": "CVE-2026-64446",
        "lastModified": "2026-09-03T15:38:01.857",
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        "published": "2026-07-25T10:17:29.310",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/138cd190efd56ab36c9fdd8fef8749d06937f24b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/2131621986c62c86109ce4d84cf73a73757eb8a6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/46f66c16a95191d9aca07a72ae6b1252a244e26c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5a752a616e756844388a1a45404db9fc29fec655"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5d7812360abf3143afcbf5efe4ef242448fa1f28"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6f20d7b0ee47c470734a69379b0fc6647c519603"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a94a643a80a84ceb8139061c3d6bf988d75e45a5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b9c4bf133c3c47e23baf4f5403b98a953bf58606"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-08T13:03:56+00:00",
      "cve": "CVE-2026-64446",
      "id": "CVE-2026-64446",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64446.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-10T02:22:37Z",
      "cve": "CVE-2026-64446",
      "id": "CVE-2026-64446",
      "initial_release_date": "2026-07-25T15:59:11Z",
      "product_status:known_affected": "341",
      "product_status:known_not_affected": "35",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64446",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64446.json",
      "version": "5"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.