{"id":"CVE-2026-80988","revision":"19a0b598322c4e33982c4a8752310794","records":[{"revision":"19a0b598322c4e33982c4a8752310794","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80988","aliases":[],"title":"NTB: ntb_transport: Fail TX enqueue when the QP link is down","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.","state":0,"publishedAt":"2026-09-11T19:42:46.228+00:00","modifiedAt":"2026-10-19T08:46:12.548+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/ntb/ntb_transport.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3cfdc448e8bfa8a7eaa5af87f357330566124b78\",\n \"lessThan\": \"76c9ccc0c6bebfc74c0e727eda67687f5103ab06\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bfa051f650a7708183bd86901ca4645dcf88c486\",\n \"lessThan\": \"96d792c65b9d5f7f9dd86a1004315db59e450c07\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4f4af6b8b7a23fa37decaf43b55403e6bfd8e219\",\n \"lessThan\": \"45cc11035165918dd1f81796ea98f81ece20d361\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f195a1a6fe416882984f8bd6c61afc1383171860\",\n \"lessThan\": \"e6cc541fab01099fd8efadfa4f13afdf118bf536\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f195a1a6fe416882984f8bd6c61afc1383171860\",\n \"lessThan\": \"5eca0d899a3be661a7e2caaaa7467a6fa15d756c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f195a1a6fe416882984f8bd6c61afc1383171860\",\n \"lessThan\": \"894e136b432da75c0352c80299807a5c4b04f167\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f195a1a6fe416882984f8bd6c61afc1383171860\",\n \"lessThan\": \"89177732fe1653bbfef10cf5d99bf20cf57762c2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f195a1a6fe416882984f8bd6c61afc1383171860\",\n \"lessThan\": \"873ce713fef5dde0939220f04f3484ec86a16fba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a8986a61ebee0b54c5d648444fbae09bd1c6dcd2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"94491412a2afc8a5aea4c5b455aed86d3486f0b1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c2cd5d993f57f819d46fe62387d3cc34d8468e60\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"449b1978d4e50b14b2a4de3a26d0b074593926a3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.195\",\n \"lessThan\": \"5.10.270\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.132\",\n \"lessThan\": \"5.15.221\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.53\",\n \"lessThan\": \"6.1.188\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.326\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.295\",\n \"lessThan\": \"4.20\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.257\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.4.16\",\n \"lessThan\": \"6.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.5.3\",\n \"lessThan\": \"6.6\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/ntb/ntb_transport.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.109\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.50\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.4\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06","https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07","https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361","https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536","https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c","https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167","https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2","https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80988","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80988","identifiers":["CVE-2026-80988"]},"retained":false,"historicalAffected":[]}],"coverage":[]}