Vulnerability-Lookup

GHSA-846G-2XVR-929F

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

In the Linux kernel, the following vulnerability has been resolved:

crypto: marvell/octeontx - fix DMA cleanup using wrong loop index

The sg_cleanup path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.

Severity

10.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74280"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:27Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: marvell/octeontx - fix DMA cleanup using wrong loop index\n\nThe sg_cleanup path used list[i] instead of list[j] when unmapping DMA\nbuffers, leaking successfully mapped entries and repeatedly unmapping\nthe failed one.",
  "id": "GHSA-846g-2xvr-929f",
  "modified": "2026-08-17T06:33:35Z",
  "published": "2026-08-15T06:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74280"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f99a396f706afc749448659d1565991330e4f71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c721a3e43344f8560ee4ef506fc1f72b4646dcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7891c64c0520519782470ba29bac8a5761e295d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a0db9fad3c97e6447a92417cb95d7c55eaa9530"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d301e5a51173ba56ce4f632a2a33bf6b14b0fcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97f150ba3e372256eabb93bd80c2cf3740077fb5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acff30cfc0d72465b51b0bfdf019f1cb54e15314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed374dbc70c10c4a864414b3d9c257faec8fd485"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-74280 (GCVE-0-2026-74280)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:57 – Updated: 2026-08-17 05:45

Title

crypto: marvell/octeontx - fix DMA cleanup using wrong loop index

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: marvell/octeontx - fix DMA cleanup using wrong loop index The sg_cleanup path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/97f150ba3e372256e…
https://git.kernel.org/stable/c/8a0db9fad3c97e644…
https://git.kernel.org/stable/c/8d301e5a51173ba56…
https://git.kernel.org/stable/c/ed374dbc70c10c4a8…
https://git.kernel.org/stable/c/6c721a3e43344f856…
https://git.kernel.org/stable/c/5f99a396f706afc74…
https://git.kernel.org/stable/c/acff30cfc0d72465b…
https://git.kernel.org/stable/c/7891c64c052051978…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 97f150ba3e372256eabb93bd80c2cf3740077fb5 (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 8a0db9fad3c97e6447a92417cb95d7c55eaa9530 (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 8d301e5a51173ba56ce4f632a2a33bf6b14b0fcf (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < ed374dbc70c10c4a864414b3d9c257faec8fd485 (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 6c721a3e43344f8560ee4ef506fc1f72b4646dcd (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 5f99a396f706afc749448659d1565991330e4f71 (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < acff30cfc0d72465b51b0bfdf019f1cb54e15314 (git) Affected: 10b4f09491bfeb0b298cb2f49df585510ee6189a , < 7891c64c0520519782470ba29bac8a5761e295d8 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (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)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/marvell/octeontx/otx_cptvf_reqmgr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "97f150ba3e372256eabb93bd80c2cf3740077fb5",
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              "version": "10b4f09491bfeb0b298cb2f49df585510ee6189a",
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              "status": "affected",
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            {
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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "5.7"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
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              "versionType": "semver"
            },
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              "version": "6.12.97",
              "versionType": "semver"
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                },
                {
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                {
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                  "versionStartIncluding": "5.7",
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                {
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                  "versionStartIncluding": "5.7",
                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: marvell/octeontx - fix DMA cleanup using wrong loop index\n\nThe sg_cleanup path used list[i] instead of list[j] when unmapping DMA\nbuffers, leaking successfully mapped entries and repeatedly unmapping\nthe failed one."
        }
      ],
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            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
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              "value": "AV:N - On OcteonTX/Thunder network appliances, remote peers reach setup_sgio_components() through inbound IPsec ESP or kTLS decryption that offloads AEAD/skcipher to the Marvell CPT VF before any peer authentication.\nAC:L - An attacker can reliably force the buggy sg_cleanup path by submitting heavily fragmented scatter-gather crypto requests that exhaust DMA/IOMMU mappings, causing dma_map_single() to fail at index i\u003e=1 while earlier entries remain mapped.\nPR:N - Inbound network decryption invokes CPT hardware offload without attacker credentials; no init-namespace root or CAP_NET_ADMIN is required on an already configured VPN/TLS endpoint to deliver ciphertext that reaches this driver.\nUI:N - Exploitation requires only automated kernel crypto processing of attacker-supplied ciphertext or AF_ALG requests; no victim mount, file open, or other interactive action is needed.\nS:C - The flaw leaks DMA_BIDIRECTIONAL IOMMU mappings for the CPT PCI device, crossing the intended DMA boundary between host memory and hardware crypto offload rather than staying within a single software security scope.\nC:H - Leaked bidirectional IOMMU mappings leave previously mapped pages device-readable after logical cleanup, enabling memory disclosure when stale mappings persist or interact with subsequent CPT DMA activity under resource pressure.\nI:H - Unreleased DMA_BIDIRECTIONAL mappings and repeated bogus dma_unmap_single() calls on the failed entry can corrupt IOMMU bookkeeping and allow the CPT device to perform unintended DMA writes to host memory outside the aborted request buffers.\nA:H - Each triggered failure leaks IOMMU mappings and may WARN or panic on invalid unmaps, causing gradual DMA resource exhaustion or immediate kernel crashes that deny crypto and overall system availability on affected OcteonTX systems."
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        "dateUpdated": "2026-08-17T05:45:21.184Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/acff30cfc0d72465b51b0bfdf019f1cb54e15314"
        },
        {
          "url": "https://git.kernel.org/stable/c/7891c64c0520519782470ba29bac8a5761e295d8"
        }
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      "title": "crypto: marvell/octeontx - fix DMA cleanup using wrong loop index",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74280",
    "datePublished": "2026-08-15T05:57:50.809Z",
    "dateReserved": "2026-08-15T05:44:03.880Z",
    "dateUpdated": "2026-08-17T05:45:21.184Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

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GHSA-846G-2XVR-929F

CVE-2026-74280 (GCVE-0-2026-74280)

Tags

Sightings

Nomenclature