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CVE-2026-10643 Out-of-bounds heap write in Zephyr `recvmsg()` ancillary-data path (`insert_pktinfo` undersizes the control-buffer capacity check)

🗓️ 27 Jun 2026 22:59:22Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 7 Views

Zephyr recvmsg ancillary data path allows out-of-bounds heap write from undersized insert_pktinfo capacity check; fixed by NET_CMSG_SPACE(pktinfo_len).

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-10643
27 Jun 202622:59
attackerkb
CVE
CVE-2026-10643
27 Jun 202622:59
cve
EUVD
EUVD-2026-39967
27 Jun 202622:59
euvd
NVD
CVE-2026-10643
28 Jun 202600:16
nvd
Positive Technologies
PT-2026-53076
28 Jun 202600:00
ptsecurity
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "3.6.0",
        "status": "affected",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]

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