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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/ntb/ntb_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "76c9ccc0c6bebfc74c0e727eda67687f5103ab06", "status": "affected", "version": "3cfdc448e8bfa8a7eaa5af87f357330566124b78", "versionType": "git"}, {"lessThan": "96d792c65b9d5f7f9dd86a1004315db59e450c07", "status": "affected", "version": "bfa051f650a7708183bd86901ca4645dcf88c486", "versionType": "git"}, {"lessThan": "45cc11035165918dd1f81796ea98f81ece20d361", "status": "affected", "version": "4f4af6b8b7a23fa37decaf43b55403e6bfd8e219", "versionType": "git"}, {"lessThan": "e6cc541fab01099fd8efadfa4f13afdf118bf536", "status": "affected", "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "versionType": "git"}, {"lessThan": "5eca0d899a3be661a7e2caaaa7467a6fa15d756c", "status": "affected", "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "versionType": "git"}, {"lessThan": "894e136b432da75c0352c80299807a5c4b04f167", "status": "affected", "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "versionType": "git"}, {"lessThan": "89177732fe1653bbfef10cf5d99bf20cf57762c2", "status": "affected", "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "versionType": "git"}, {"lessThan": "873ce713fef5dde0939220f04f3484ec86a16fba", "status": "affected", "version": "f195a1a6fe416882984f8bd6c61afc1383171860", "versionType": "git"}, {"status": "affected", "version": "aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9", "versionType": "git"}, {"status": "affected", "version": "a8986a61ebee0b54c5d648444fbae09bd1c6dcd2", "versionType": "git"}, {"status": "affected", "version": "94491412a2afc8a5aea4c5b455aed86d3486f0b1", "versionType": "git"}, {"status": "affected", "version": "c2cd5d993f57f819d46fe62387d3cc34d8468e60", "versionType": "git"}, {"status": "affected", "version": "449b1978d4e50b14b2a4de3a26d0b074593926a3", "versionType": "git"}, {"lessThan": "5.10.270", "status": "affected", "version": "5.10.195", "versionType": "semver"}, {"lessThan": "5.15.221", "status": "affected", "version": "5.15.132", "versionType": "semver"}, {"lessThan": "6.1.188", "status": "affected", "version": "6.1.53", "versionType": "semver"}, {"lessThan": "4.15", "status": "affected", "version": "4.14.326", "versionType": "semver"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.295", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.257", "versionType": "semver"}, {"lessThan": "6.5", "status": "affected", "version": "6.4.16", "versionType": "semver"}, {"lessThan": "6.6", "status": "affected", "version": "6.5.3", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/ntb/ntb_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-80988", "lastModified": "2026-09-14T13:18:53.493", "metrics": {}, "published": "2026-09-11T20:19:05.480", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: NTB transport memory leak when QP link is down", "id": "2532251", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532251"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's Non-Transparent Bridge (NTB) transport module. When the NTB transport attempts to transmit packets while the Queue Pair (QP) link is down, the system incorrectly reports a successful transmission without properly consuming the packet. This oversight leads to a memory leak, where system memory is not released, potentially affecting system stability and performance over an extended period."], "name": "CVE-2026-80988", "public_date": "2026-09-11T19:42:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80988\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80988\nhttps://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c\nhttps://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba\nhttps://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2\nhttps://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167"], "threat_severity": "Moderate"}

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