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CVE-2026-12234

🗓️ 12 Aug 2026 04:39:23Reported by zephyrType 
cve
 cve
🔗 web.nvd.nist.gov👁 10 Views

Zephyr RTOS TOCTOU double-fetch in zsock_sendmsg/recvmsg verifiers allows kernel-heap OOBW 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
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
euvd
EUVD
EUVD-2026-57069
12 Aug 202604:39
euvd
nvd
NVD
CVE-2026-12234
12 Aug 202605:17
nvd
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/net/lib/sockets/sockets.c"
    ],
    "versions": [
      {
        "version": "2.3.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "4.4.2"
      }
    ]
  }
]

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12 Aug 2026 05:17Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.8
10