{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80988", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.811Z", "datePublished": "2026-09-11T19:42:46.228Z", "dateUpdated": "2026-10-19T08:46:12.548Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:46:12.548Z" }, "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/ntb/ntb_transport.c" ], "versions": [ { "version": "3cfdc448e8bfa8a7eaa5af87f357330566124b78", "lessThan": "76c9ccc0c6bebfc74c0e727eda67687f5103ab06", "status": "affected", "versionType": "git" }, { "version": "bfa051f650a7708183bd86901ca4645dcf88c486", "lessThan": "96d792c65b9d5f7f9dd86a1004315db59e450c07", "status": "affected", "versionType": "git" }, { "version": "4f4af6b8b7a23fa37decaf43b55403e6bfd8e219", "lessThan": "45cc11035165918dd1f81796ea98f81ece20d361", "status": "affected", "versionType": "git" }, { "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "lessThan": "e6cc541fab01099fd8efadfa4f13afdf118bf536", "status": "affected", "versionType": "git" }, { "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "lessThan": "5eca0d899a3be661a7e2caaaa7467a6fa15d756c", "status": "affected", "versionType": "git" }, { "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "lessThan": "894e136b432da75c0352c80299807a5c4b04f167", "status": "affected", "versionType": "git" }, { "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "lessThan": "89177732fe1653bbfef10cf5d99bf20cf57762c2", "status": "affected", "versionType": "git" }, { "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "lessThan": "873ce713fef5dde0939220f04f3484ec86a16fba", "status": "affected", "versionType": "git" }, { "version": "aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9", "status": "affected", "versionType": "git" }, { "version": "a8986a61ebee0b54c5d648444fbae09bd1c6dcd2", "status": "affected", "versionType": "git" }, { "version": "94491412a2afc8a5aea4c5b455aed86d3486f0b1", "status": "affected", "versionType": "git" }, { "version": "c2cd5d993f57f819d46fe62387d3cc34d8468e60", "status": "affected", "versionType": "git" }, { "version": "449b1978d4e50b14b2a4de3a26d0b074593926a3", "status": "affected", "versionType": "git" }, { "version": "5.10.195", "lessThan": "5.10.270", "status": "affected", "versionType": "semver" }, { "version": "5.15.132", "lessThan": "5.15.221", "status": "affected", "versionType": "semver" }, { "version": "6.1.53", "lessThan": "6.1.188", "status": "affected", "versionType": "semver" }, { "version": "4.14.326", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.295", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.257", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "6.4.16", "lessThan": "6.5", "status": "affected", "versionType": "semver" }, { "version": "6.5.3", "lessThan": "6.6", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/ntb/ntb_transport.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.195", "versionEndExcluding": "5.10.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.132", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.53", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.109" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.50" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.326" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.257" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06" }, { "url": "https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07" }, { "url": "https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361" }, { "url": "https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536" }, { "url": "https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c" }, { "url": "https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167" }, { "url": "https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2" }, { "url": "https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba" } ], "title": "NTB: ntb_transport: Fail TX enqueue when the QP link is down", "x_generator": { "engine": "bippy-1.2.0" } } } }