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CVE-2025-21927

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() nvme_tcp_recv_pdu() doesn't check the validity of the header length. When header digests are enabled, a target might send a packet with an invalid header length (e.g. 255), causing nvme_tcp_verify_hdgst() to access memory outside the allocated area and cause memory corruptions by overwriting it with the calculated digest. Fix this by rejecting packets with an unexpected header length.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-04-01 16:15:23.470000
Last modified
2026-10-30 13:17:54.157000
View original CVE JSON 
{
  "id": "CVE-2025-21927",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-04-01T16:15:23.470",
  "lastModified": "2026-10-30T13:17:54.157",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()\n\nnvme_tcp_recv_pdu() doesn't check the validity of the header length.\nWhen header digests are enabled, a target might send a packet with an\ninvalid header length (e.g. 255), causing nvme_tcp_verify_hdgst()\nto access memory outside the allocated area and cause memory corruptions\nby overwriting it with the calculated digest.\n\nFix this by rejecting packets with an unexpected header length."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvme-tcp: se corrige una posible corrupción de memoria en nvme_tcp_recv_pdu(). nvme_tcp_recv_pdu() no comprueba la validez de la longitud del encabezado. Cuando se habilitan los resúmenes de encabezado, un destino podría enviar un paquete con una longitud de encabezado no válida (p. ej., 255), lo que provoca que nvme_tcp_verify_hdgst() acceda a memoria fuera del área asignada y provoque corrupciones de memoria al sobrescribirla con el resumen calculado. Para solucionar esto, rechace los paquetes con una longitud de encabezado inesperada."
    }
  ],
  "affected": [
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      "affectedData": [
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            },
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              "version": "6.14",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
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  "metrics": {
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  "weaknesses": [
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