CVE-2026-72129 (GCVE-0-2026-72129)
Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:40
VLAI
EPSS
VEX
Title
nvmet-rdma: handle inline data with a nonzero offset
Summary
In the Linux kernel, the following vulnerability has been resolved:
nvmet-rdma: handle inline data with a nonzero offset
nvmet_rdma_use_inline_sg() maps the host-controlled inline data offset
into the per-command inline scatterlist. The bounds check admits any
offset with off + len <= inline_data_size, but the mapping still assumes
the data begins in the first inline page:
sg->offset = off;
sg->length = min_t(int, len, PAGE_SIZE - off);
When a port is configured with inline_data_size > PAGE_SIZE (settable up
to max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size]
makes "PAGE_SIZE - off" underflow, so sg->length is set to ~4 GiB and
the block backend reads far past the first inline page. num_pages(len)
also ignores the offset, so an in-bounds offset whose [off, off+len)
span crosses a page boundary under-counts the scatterlist.
Map the offset properly: split it into a page index and an in-page
offset, start the scatterlist at that page, and size the page count from
page_off + len. Because the request scatterlist may now start at
inline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL
identity test in nvmet_rdma_release_rsp() to a range test; otherwise the
persistent inline scatterlist is mistaken for an allocated one and
nvmet_req_free_sgls() frees an inline page (and warns in
free_large_kmalloc()).
Severity
9.8 (Critical)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < c2106ba1b14d644a5203bea1a50dbe25dcad713c
(git)
Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < bf8bcc1c137d54a62a428b00051fdbb13660673b (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 11401371152b228448a41d79c6de1c938f93049a (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 7c96581169c9d9a7d0726e554313acfbead6141c (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 42a8ea3acd883f4f210d9e54e0975b1e2292b529 (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 2944113ad5fbcdf5d349d857c03d2a44b6de75b8 (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 98bcdfa619150b2f41fa15bac140dbaf2584ad05 (git) Affected: 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 , < 48c0162f647bb47e6084ffbc71b8f213f5e2f4f8 (git) |
guessed | |
| Linux | Linux |
Affected:
4.19
Unaffected: 0 , < 4.19 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
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},
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"version": "7.2",
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}
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}
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"cpeApplicability": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-rdma: handle inline data with a nonzero offset\n\nnvmet_rdma_use_inline_sg() maps the host-controlled inline data offset\ninto the per-command inline scatterlist. The bounds check admits any\noffset with off + len \u003c= inline_data_size, but the mapping still assumes\nthe data begins in the first inline page:\n\n\tsg-\u003eoffset = off;\n\tsg-\u003elength = min_t(int, len, PAGE_SIZE - off);\n\nWhen a port is configured with inline_data_size \u003e PAGE_SIZE (settable up\nto max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size]\nmakes \"PAGE_SIZE - off\" underflow, so sg-\u003elength is set to ~4 GiB and\nthe block backend reads far past the first inline page. num_pages(len)\nalso ignores the offset, so an in-bounds offset whose [off, off+len)\nspan crosses a page boundary under-counts the scatterlist.\n\nMap the offset properly: split it into a page index and an in-page\noffset, start the scatterlist at that page, and size the page count from\npage_off + len. Because the request scatterlist may now start at\ninline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL\nidentity test in nvmet_rdma_release_rsp() to a range test; otherwise the\npersistent inline scatterlist is mistaken for an allocated one and\nnvmet_req_free_sgls() frees an inline page (and warns in\nfree_large_kmalloc())."
}
],
"metrics": [
{
"cvssV3_1": {
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"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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{
"lang": "en",
"value": "AV:N - nvmet-rdma is an in-kernel NVMe-oF target that processes NVMe commands and inline data from remote initiators over RDMA (RoCE/IB) via RDMA RECV completions, placing it in the same network-reachable class as nvmet-tcp and other remote fabric targets.\nAC:L - In deployments using inline_data_size above PAGE_SIZE (up to 16KB), a remote initiator fully controls the inline SGL offset and length in write commands and can deterministically trigger the integer underflow and multi-gigabyte scatterlist length without races or victim-specific timing.\nPR:N - Exploitation requires only remote NVMe-oF RDMA connectivity to a configured target subsystem; no local UNIX privileges or Linux capabilities on the victim host are needed, and the vulnerable recv/command path is reachable before or without mandatory DH-HMAC-CHAP on I/O queues.\nUI:N - Triggering the bug requires only sending crafted NVMe write commands with malicious inline SGL offsets over an established RDMA connection; no end-user actions such as mounting filesystems or opening files are required.\nS:U - The vulnerability corrupts kernel heap memory and backing storage on the NVMe target host itself; it does not cross a VM, container, or IOMMU security boundary to impact a separate security authority.\nC:H - The integer underflow sets scatterlist entries to ~4 GiB, causing the block backend to read far beyond the inline DMA buffer pages into adjacent kernel memory, and the erroneous sgl_free of inline pages creates use-after-free conditions enabling further information disclosure.\nI:H - Out-of-bounds kernel memory is incorporated into block write bios corrupting exported backing storage, and the erroneous freeing of inline scatterlist pages enables heap corruption primitives that can be leveraged for arbitrary memory writes or control-flow hijacking.\nA:H - Out-of-bounds access from multi-gigabyte scatterlist lengths, warnings from free_large_kmalloc() on freed inline pages, and nvmet fatal error handling can cause kernel oops, hung I/O, or panic on the storage target."
}
]
}
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"providerMetadata": {
"dateUpdated": "2026-08-17T05:40:41.114Z",
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"url": "https://git.kernel.org/stable/c/c2106ba1b14d644a5203bea1a50dbe25dcad713c"
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{
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},
{
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}
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"cveId": "CVE-2026-72129",
"datePublished": "2026-08-15T05:53:05.874Z",
"dateReserved": "2026-08-09T03:40:39.907Z",
"dateUpdated": "2026-08-17T05:40:41.114Z",
"state": "PUBLISHED"
},
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"date": "2026-09-14",
"epss": "0.00695",
"percentile": "0.51017"
},
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The bounds check admits any\\noffset with off + len \u003c= inline_data_size, but the mapping still assumes\\nthe data begins in the first inline page:\\n\\n\\tsg-\u003eoffset = off;\\n\\tsg-\u003elength = min_t(int, len, PAGE_SIZE - off);\\n\\nWhen a port is configured with inline_data_size \u003e PAGE_SIZE (settable up\\nto max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size]\\nmakes \\\"PAGE_SIZE - off\\\" underflow, so sg-\u003elength is set to ~4 GiB and\\nthe block backend reads far past the first inline page. num_pages(len)\\nalso ignores the offset, so an in-bounds offset whose [off, off+len)\\nspan crosses a page boundary under-counts the scatterlist.\\n\\nMap the offset properly: split it into a page index and an in-page\\noffset, start the scatterlist at that page, and size the page count from\\npage_off + len. Because the request scatterlist may now start at\\ninline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL\\nidentity test in nvmet_rdma_release_rsp() to a range test; otherwise the\\npersistent inline scatterlist is mistaken for an allocated one and\\nnvmet_req_free_sgls() frees an inline page (and warns in\\nfree_large_kmalloc()).\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/target/rdma.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"c2106ba1b14d644a5203bea1a50dbe25dcad713c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"bf8bcc1c137d54a62a428b00051fdbb13660673b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"11401371152b228448a41d79c6de1c938f93049a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"7c96581169c9d9a7d0726e554313acfbead6141c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"42a8ea3acd883f4f210d9e54e0975b1e2292b529\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"2944113ad5fbcdf5d349d857c03d2a44b6de75b8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"98bcdfa619150b2f41fa15bac140dbaf2584ad05\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349\",\"lessThan\":\"48c0162f647bb47e6084ffbc71b8f213f5e2f4f8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/target/rdma.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/11401371152b228448a41d79c6de1c938f93049a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2944113ad5fbcdf5d349d857c03d2a44b6de75b8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/42a8ea3acd883f4f210d9e54e0975b1e2292b529\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/48c0162f647bb47e6084ffbc71b8f213f5e2f4f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7c96581169c9d9a7d0726e554313acfbead6141c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/98bcdfa619150b2f41fa15bac140dbaf2584ad05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bf8bcc1c137d54a62a428b00051fdbb13660673b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2106ba1b14d644a5203bea1a50dbe25dcad713c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-09-10T03:17:17+00:00",
"cve": "CVE-2026-72129",
"id": "CVE-2026-72129",
"initial_release_date": "2026-08-15T00:00:00+00:00",
"product_status:fixed": "762",
"product_status:known_affected": "50",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: nvmet-rdma: handle inline data with a nonzero offset",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72129.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-12T16:38:10Z",
"cve": "CVE-2026-72129",
"id": "CVE-2026-72129",
"initial_release_date": "2026-08-18T16:54:53Z",
"product_status:known_affected": "344",
"product_status:known_not_affected": "6",
"product_status:recommended": "62",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-72129",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72129.json",
"version": "6"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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