CVE-2026-23112 (GCVE-0-2026-23112)
Vulnerability from cvelistv5 – Published: 2026-02-13 13:29 – Updated: 2026-08-05 12:20
VLAI
EPSS
VEX
Title
nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
Summary
In the Linux kernel, the following vulnerability has been resolved:
nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU
length or offset exceeds sg_cnt and then use bogus sg->length/offset
values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining
entries, and sg->length/offset before building the bvec.
Severity
9.8 (Critical)
Assigner
References
8 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 0b9981751be14b59b4473383c731c833738aebdb
(git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 42afe8ed8ad2de9c19457156244ef3e1eca94b5d (git) Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 1385be357e8acd09b36e026567f3a9d5c61139de (git) Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < dca1a6ba0da9f472ef040525fab10fd9956db59f (git) Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 19672ae68d52ff75347ebe2420dde1b07adca09f (git) Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < ab200d71553bdcf4de554a5985b05b2dd606bc57 (git) Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 52a0a98549344ca20ad81a4176d68d28e3c05a5c (git) |
guessed | |
| Linux | Linux |
Affected:
5.0
Unaffected: 0 , < 5.0 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.200 , ≤ 5.15.* (semver) Unaffected: 6.1.163 , ≤ 6.1.* (semver) Unaffected: 6.6.124 , ≤ 6.6.* (semver) Unaffected: 6.12.70 , ≤ 6.12.* (semver) Unaffected: 6.18.10 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V4.0
(custom)
|
guessed |
{
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{
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{
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"vendor": "Siemens",
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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-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec\n\nnvmet_tcp_build_pdu_iovec() could walk past cmd-\u003ereq.sg when a PDU\nlength or offset exceeds sg_cnt and then use bogus sg-\u003elength/offset\nvalues, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining\nentries, and sg-\u003elength/offset before building the bvec."
}
],
"metrics": [
{
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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",
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}
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}
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"cveId": "CVE-2026-23112",
"datePublished": "2026-02-13T13:29:56.724Z",
"dateReserved": "2026-01-13T15:37:45.968Z",
"dateUpdated": "2026-08-05T12:20:19.573Z",
"state": "PUBLISHED"
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"date": "2026-09-15",
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Guard sg_idx, remaining\\nentries, and sg-\u003elength/offset before building the bvec.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nnvmet-tcp: a\u00f1adir comprobaciones de l\u00edmites en nvmet_tcp_build_pdu_iovec\\n\\nnvmet_tcp_build_pdu_iovec() podr\u00eda exceder cmd-\u0026gt;req.sg cuando una longitud o desplazamiento de PDU excede sg_cnt y luego usar valores sg-\u0026gt;length/offset err\u00f3neos, lo que lleva a _copy_to_iter() GPF/KASAN. Proteger sg_idx, las entradas restantes y sg-\u0026gt;length/offset antes de construir el 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RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V4.0\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"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},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0\",\"versionEndExcluding\":\"5.10.250\",\"matchCriteriaId\":\"F3FE195C-31F6-4C73-A636-498693B92336\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.200\",\"matchCriteriaId\":\"D16F6370-B70F-471C-8363-3A17B0BB1DA9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.163\",\"matchCriteriaId\":\"E9C856E1-4308-4C0B-A973-7DD375DF66C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.124\",\"matchCriteriaId\":\"76183B9F-CABE-4E21-A3E3-F0EBF99DC3C7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.70\",\"matchCriteriaId\":\"F3791390-0628-4808-99EF-1ED8ABF60933\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.10\",\"matchCriteriaId\":\"7156C23F-009E-4D05-838C-A2DA417B5B8D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F71D92C0-C023-48BD-B3B6-70B638EEE298\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"13580667-0A98-40CC-B29F-D12790B91BDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"EB5B7DFC-C36B-45D8-922C-877569FDDF43\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b9981751be14b59b4473383c731c833738aebdb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1385be357e8acd09b36e026567f3a9d5c61139de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/19672ae68d52ff75347ebe2420dde1b07adca09f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/42afe8ed8ad2de9c19457156244ef3e1eca94b5d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/52a0a98549344ca20ad81a4176d68d28e3c05a5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ab200d71553bdcf4de554a5985b05b2dd606bc57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dca1a6ba0da9f472ef040525fab10fd9956db59f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-253495.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-02T17:11:59+00:00",
"cve": "CVE-2026-23112",
"id": "CVE-2026-23112",
"initial_release_date": "2026-02-13T00:00:00+00:00",
"product_status:known_affected": "232",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23112.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-07-24T02:39:34Z",
"cve": "CVE-2026-23112",
"id": "CVE-2026-23112",
"initial_release_date": "2026-02-14T00:24:16Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "586",
"product_status:known_not_affected": "34",
"product_status:recommended": "318",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-23112",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23112.json",
"version": "25"
}
}
}
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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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