CVE-2026-80788

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80788", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.793Z", "datePublished": "2026-09-04T15:12:59.912Z", "dateUpdated": "2026-10-19T08:43:40.496Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:40.496Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations\n\nWhen fuzzing the nvme target code, I tripped a kernel warning in\nnvmet_tcp_map_data() because the length passed into the allocator is\ncontrolled by the remote initiator.\n\nA remote initiator that sends a command with an SGL claiming a huge\nnumber, can create a scatterlist and iovec allocation of over 1 million\nentries, which causes the backing kmalloc call to exceed MAX_PAGE_ORDER\nand then the page allocator will trip on a WARN_ON_ONCE_GFP() message:\n\n WARNING: mm/page_alloc.c:5280 __alloc_frozen_pages_noprof\n Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n ...\n sgl_alloc_order\n nvmet_tcp_map_data\n nvmet_tcp_try_recv_pdu\n\nAs it's never good to trip a kernel warning remotely due to many systems\nhaving panic-on-warn enabled, let's silence it by just add GFP_NOWARN to\nthe allocation flags."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/tcp.c"], "versions": [{"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "8d01f0d0e96485e39ad89b859ef85e1dc3020465", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "86cc450022473c4a29b43a09f3ec22a9ef566dac", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "c509f20be1cabda3087810bb2d658d66b3f31f35", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "9c95f7e66c62ee6c6abedcf1c04311f430ff5833", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "7fd6da0f28932442b51658bac4ff55565ca9b377", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "9b770e40bc00381e5ebf53653de5776773415be3", "status": "affected", "versionType": "git"}, {"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "lessThan": "737a3b535247226f6e1a7988fd9d6e63e7d6fc71", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/tcp.c"], "versions": [{"version": "5.0", "status": "affected"}, {"version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.267", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.218", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.1", "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": "5.0", "versionEndExcluding": "5.10.267"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.15.218"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.1.185"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.6.154"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.12.106"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.18.47"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "7.1.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "7.2.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465"}, {"url": "https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e"}, {"url": "https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741"}, {"url": "https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac"}, {"url": "https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35"}, {"url": "https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833"}, {"url": "https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377"}, {"url": "https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3"}, {"url": "https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71"}], "title": "nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/target/tcp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8d01f0d0e96485e39ad89b859ef85e1dc3020465", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "86cc450022473c4a29b43a09f3ec22a9ef566dac", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "c509f20be1cabda3087810bb2d658d66b3f31f35", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "9c95f7e66c62ee6c6abedcf1c04311f430ff5833", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "7fd6da0f28932442b51658bac4ff55565ca9b377", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "9b770e40bc00381e5ebf53653de5776773415be3", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}, {"lessThan": "737a3b535247226f6e1a7988fd9d6e63e7d6fc71", "status": "affected", "version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/target/tcp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.0"}, {"lessThan": "5.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.267", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.218", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.185", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.154", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.106", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.47", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.11", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nnvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations\n\nWhen fuzzing the nvme target code, I tripped a kernel warning in\nnvmet_tcp_map_data() because the length passed into the allocator is\ncontrolled by the remote initiator.\n\nA remote initiator that sends a command with an SGL claiming a huge\nnumber, can create a scatterlist and iovec allocation of over 1 million\nentries, which causes the backing kmalloc call to exceed MAX_PAGE_ORDER\nand then the page allocator will trip on a WARN_ON_ONCE_GFP() message:\n\n WARNING: mm/page_alloc.c:5280 __alloc_frozen_pages_noprof\n Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n ...\n sgl_alloc_order\n nvmet_tcp_map_data\n nvmet_tcp_try_recv_pdu\n\nAs it's never good to trip a kernel warning remotely due to many systems\nhaving panic-on-warn enabled, let's silence it by just add GFP_NOWARN to\nthe allocation flags."}], "id": "CVE-2026-80788", "lastModified": "2026-10-19T09:17:12.807", "metrics": {}, "published": "2026-09-04T16:18:04.857", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations", "id": "2528540", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528540"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1285", "details": ["A flaw was found in the Linux kernel's nvmet-tcp component. A remote attacker can send a specially crafted command with an oversized Scatter-Gather List (SGL) allocation. This can lead to an excessive memory allocation, triggering a kernel warning. On systems configured to panic on warnings, this could result in a denial of service."], "name": "CVE-2026-80788", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80788\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80788\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80788.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8d01f0d0e96485e39ad89b859ef85e1dc3020465)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,86cc450022473c4a29b43a09f3ec22a9ef566dac)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c509f20be1cabda3087810bb2d658d66b3f31f35)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,9c95f7e66c62ee6c6abedcf1c04311f430ff5833)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7fd6da0f28932442b51658bac4ff55565ca9b377)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,9b770e40bc00381e5ebf53653de5776773415be3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,737a3b535247226f6e1a7988fd9d6e63e7d6fc71)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.10.267)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.15.218)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.1.185)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.154)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.106)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.47)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.1.11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.2.1)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.267,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.218,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.185,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.154,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.106,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.47,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.11,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.1,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-04T17:15:14.587886+00:00", "updated": "2026-09-21T05:30:07.499376+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-1285"]}