CVE-2026-93077 (GCVE-0-2026-93077)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10
VLAI
Title
cxl/features: Clamp Get Feature output size to the remaining buffer
Summary
In the Linux kernel, the following vulnerability has been resolved: cxl/features: Clamp Get Feature output size to the remaining buffer cxl_get_feature() reads a feature in a loop but passes a fixed size_out as the output capacity every iteration. On the last partial iteration the buffer has less room left, so a device that returns more than asked can overflow feat_out. Use the per-iter size data_to_rd_size, which already tracks the remaining room, as the output capacity.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5e5ac21f629de796ab5d598b59c5e468c6fe4f95 , < b8abbd5c2928fd839dab702244cc57b228ab43aa (git)
Affected: 5e5ac21f629de796ab5d598b59c5e468c6fe4f95 , < ca95b15a0760e7724e61addbdd61050be13b6406 (git)
Affected: 5e5ac21f629de796ab5d598b59c5e468c6fe4f95 , < 2aeb21fe557ef154f0cdf4f9745ebd8d5b31ca83 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/features.c"
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              "operator": "OR"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/features: Clamp Get Feature output size to the remaining buffer\n\ncxl_get_feature() reads a feature in a loop but passes a fixed size_out\nas the output capacity every iteration. On the last partial iteration\nthe buffer has less room left, so a device that returns more than asked\ncan overflow feat_out.\n\nUse the per-iter size data_to_rd_size, which already tracks the\nremaining room, as the output capacity."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:59.026Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/ca95b15a0760e7724e61addbdd61050be13b6406"
        },
        {
          "url": "https://git.kernel.org/stable/c/2aeb21fe557ef154f0cdf4f9745ebd8d5b31ca83"
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      "title": "cxl/features: Clamp Get Feature output size to the remaining buffer",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93077",
    "datePublished": "2026-09-17T16:10:59.026Z",
    "dateReserved": "2026-09-17T15:57:05.661Z",
    "dateUpdated": "2026-09-17T16:10:59.026Z",
    "state": "PUBLISHED"
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                "programFiles": [
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/features: Clamp Get Feature output size to the remaining buffer\n\ncxl_get_feature() reads a feature in a loop but passes a fixed size_out\nas the output capacity every iteration. On the last partial iteration\nthe buffer has less room left, so a device that returns more than asked\ncan overflow feat_out.\n\nUse the per-iter size data_to_rd_size, which already tracks the\nremaining room, as the output capacity."
          }
        ],
        "id": "CVE-2026-93077",
        "lastModified": "2026-09-17T17:18:01.643",
        "metrics": {},
        "published": "2026-09-17T17:18:01.643",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-18T00:12:36Z",
      "cve": "CVE-2026-93077",
      "id": "CVE-2026-93077",
      "initial_release_date": "2026-09-18T00:12:36Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93077",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93077.json",
      "version": "2"
    }
  }
}



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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

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.