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EUVD-2026-57069

🗓️ 12 Aug 2026 04:39:23Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 4 Views

Zephyr RTOS double-fetch TOCTOU in z_vrfy_zsock_sendmsg/recvmsg enables kernel heap overflow and privilege escalation.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-12234
12 Aug 202604:39
attackerkb
circl
Circl
CVE-2026-12234
12 Aug 202606:01
circl
cve
CVE
CVE-2026-12234
12 Aug 202604:39
cve
cvelist
Cvelist
CVE-2026-12234 TOCTOU double-fetch in `zsock_sendmsg`/`recvmsg` userspace verifiers allows kernel-heap out-of-bounds write
12 Aug 202604:39
cvelist
nvd
NVD
CVE-2026-12234
12 Aug 202605:17
nvd
[
  {
    "enisaIdVendor": [
      {
        "id": "03b909c5-3ecf-3a68-a223-3828e65a52c5",
        "vendor": {
          "name": "zephyrproject"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "b41c2914-5d05-327a-953f-268cfe307880",
        "product": {
          "name": "Zephyr",
          "vendor": {
            "name": "zephyrproject-rtos"
          }
        },
        "product_version": "2.3.0 <4.4.2"
      }
    ]
  }
]

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12 Aug 2026 04:39Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.8
4