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CVE-2026-46161 (GCVE-0-2026-46161)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-06-14 17:59
VLAI
Title
md/raid10: fix divide-by-zero in setup_geo() with zero far_copies
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies setup_geo() extracts near_copies (nc) and far_copies (fc) from the user-provided layout parameter without checking for zero. When fc=0 with the "improved" far set layout selected, 'geo->far_set_size = disks / fc' triggers a divide-by-zero. Validate nc and fc immediately after extraction, returning -1 if either is zero.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 0b43a70394ce492274e67463326be03e0a9897c5 (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < c716ab3034f84f8a6c226814247b8c5ac9f95da1 (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 553e32adfa1a96b217651139a3f8c3b92b9984ac (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 4af2e558e6fdfb972c61350653fd55d1f62b60a5 (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 913d556e4bd1b56ed822815655b82c7bb54edc51 (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < f9ddb621b2325eb69c95692958daf2bab4dea2c4 (git)
Affected: 475901aff15841fb0a81e7546517407779a9b061 , < 9aa6d860b0930e2f72795665c42c44252a558a0c (git)
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Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0b43a70394ce492274e67463326be03e0a9897c5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4af2e558e6fdfb972c61350653fd55d1f62b60a5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/553e32adfa1a96b217651139a3f8c3b92b9984ac"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/913d556e4bd1b56ed822815655b82c7bb54edc51"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9aa6d860b0930e2f72795665c42c44252a558a0c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c716ab3034f84f8a6c226814247b8c5ac9f95da1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f9ddb621b2325eb69c95692958daf2bab4dea2c4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-369"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:41:13+00:00",
      "cve": "CVE-2026-46161",
      "id": "CVE-2026-46161",
      "initial_release_date": "2026-05-28T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46161.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:11:51Z",
      "cve": "CVE-2026-46161",
      "id": "CVE-2026-46161",
      "initial_release_date": "2026-05-29T01:16:02Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "645",
      "product_status:known_not_affected": "4",
      "product_status:recommended": "277",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46161",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46161.json",
      "version": "16"
    }
  }
}



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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

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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Detection rules are retrieved from Rulezet.

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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.


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