{"id":"CVE-2026-80988","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80988","generatedAt":"2026-10-28T03:24:44.076Z","title":"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…","description":"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.","published":"2026-09-11T20:19:05.000Z","lastModified":"2026-10-19T09:17:32.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00177,"percentile":0.07169,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80988","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}