CVE-2026-80988
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
NTB: ntb_transport: Fail TX enqueue when the QP link is down
Commit f195a1a6fe41 ("ntb: Drop packets when qp link is down") meant to make ntb_transport_tx_enqueue() drop packets submitted while the QP link is down, but it only returns 0 without consuming the packet. Zero means success by this function's contract, so ntb_netdev reports NETDEV_TX_OK and forgets the skb: nothing queued it, nothing frees it, and it leaks, one skb for every transmit racing a link-down.
Return -ENOLINK instead, restoring the contract that a non-zero return leaves the buffer owned by the caller.
Leer descripción completaMostrar menos
With the preceding patch, ntb_netdev frees the skb on non-retryable enqueue failures and returns NETDEV_TX_OK, so a packet racing with link-down is dropped without leaking or entering a busy retry loop.
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361
- https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c
- https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06
- https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba
- https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2
- https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167
- https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07
- https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536
JSON original (NVD)
Mostrar
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_transport: Fail TX enqueue when the QP link is down\n\nCommit f195a1a6fe41 (\"ntb: Drop packets when qp link is down\") meant to\nmake ntb_transport_tx_enqueue() drop packets submitted while the QP link\nis down, but it only returns 0 without consuming the packet. Zero means\nsuccess by this function's contract, so ntb_netdev reports NETDEV_TX_OK\nand forgets the skb: nothing queued it, nothing frees it, and it leaks,\none skb for every transmit racing a link-down.\n\nReturn -ENOLINK instead, restoring the contract that a non-zero return\nleaves the buffer owned by the caller. With the preceding patch,\nntb_netdev frees the skb on non-retryable enqueue failures and returns\nNETDEV_TX_OK, so a packet racing with link-down is dropped without leaking\nor entering a busy retry loop."
}
],
"lastModified": "2026-09-14T13:18:53.493",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}