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CVE-2026-80988

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : 6.12.109, <=6.1.*, <=6.12.*, <5.15.221, <96d792c65b9d5f7f9dd86a1004315db59e450c07, 3cfdc448e8bfa8a7eaa5af87f357330566124b78, 5.15.221, <6.5, <e6cc541fab01099fd8efadfa4f13afdf118bf536, 5.10.270, 0, 94491412a2afc8a5aea4c5b455aed86d3486f0b1, 7.2.4, f195a1a6fe416882984f8bd6c61afc1383171860, aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9, 6.1.188, <894e136b432da75c0352c80299807a5c4b04f167, 4.19.295, 4f4af6b8b7a23fa37decaf43b55403e6bfd8e219, <873ce713fef5dde0939220f04f3484ec86a16fba, <6.6, <4.20, 6.5.3, <=5.10.*, <=6.6.*, 6.4.16, 5.4.257, 6.6.157, <45cc11035165918dd1f81796ea98f81ece20d361, 6.6, <5.5, 449b1978d4e50b14b2a4de3a26d0b074593926a3, <=6.18.*, <5.10.270, 5.15.132, <89177732fe1653bbfef10cf5d99bf20cf57762c2, <=7.2.*, 5.10.195, <=*, <=5.15.*, a8986a61ebee0b54c5d648444fbae09bd1c6dcd2, 6.18.50, 6.1.53, <76c9ccc0c6bebfc74c0e727eda67687f5103ab06, <5eca0d899a3be661a7e2caaaa7467a6fa15d756c, <6.1.188, 4.14.326, c2cd5d993f57f819d46fe62387d3cc34d8468e60, <4.15, bfa051f650a7708183bd86901ca4645dcf88c486, 7.3

Description

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. 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.

Gravité et risque d'exploitation

CVE-2026-80988 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.18 %, ce qui la place devant 6.8 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 6.12.109, <=6.1.*, <=6.12.*, <5.15.221, <96d792c65b9d5f7f9dd86a1004315db59e450c07, 3cfdc448e8bfa8a7eaa5af87f357330566124b78, 5.15.221, <6.5, <e6cc541fab01099fd8efadfa4f13afdf118bf536, 5.10.270, 0, 94491412a2afc8a5aea4c5b455aed86d3486f0b1, 7.2.4, f195a1a6fe416882984f8bd6c61afc1383171860, aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9, 6.1.188, <894e136b432da75c0352c80299807a5c4b04f167, 4.19.295, 4f4af6b8b7a23fa37decaf43b55403e6bfd8e219, <873ce713fef5dde0939220f04f3484ec86a16fba, <6.6, <4.20, 6.5.3, <=5.10.*, <=6.6.*, 6.4.16, 5.4.257, 6.6.157, <45cc11035165918dd1f81796ea98f81ece20d361, 6.6, <5.5, 449b1978d4e50b14b2a4de3a26d0b074593926a3, <=6.18.*, <5.10.270, 5.15.132, <89177732fe1653bbfef10cf5d99bf20cf57762c2, <=7.2.*, 5.10.195, <=*, <=5.15.*, a8986a61ebee0b54c5d648444fbae09bd1c6dcd2, 6.18.50, 6.1.53, <76c9ccc0c6bebfc74c0e727eda67687f5103ab06, <5eca0d899a3be661a7e2caaaa7467a6fa15d756c, <6.1.188, 4.14.326, c2cd5d993f57f819d46fe62387d3cc34d8468e60, <4.15, bfa051f650a7708183bd86901ca4645dcf88c486, 7.3) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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