CVE-2026-80610 (GCVE-0-2026-80610)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-28 06:48
VLAI
Title
net: enetc: fix potential divide-by-zero when num_vsi is zero
Summary
In the Linux kernel, the following vulnerability has been resolved: net: enetc: fix potential divide-by-zero when num_vsi is zero For i.MX94 series, all the standalone ENETCs do not support SR-IOV, so pf->caps.num_vsi is zero. This leads to a divide-by-zero in enetc4_default_rings_allocation() when distributing rings among PF and VFs. Division by zero is undefined behavior in C. On ARM64, the UDIV/SDIV instructions silently return zero rather than raising an exception, so the issue does not cause a visible crash. However, relying on this behavior is incorrect and poses a cross-platform compatibility risk. Add an explicit check for num_vsi == 0 and return early after the PF's rings have been configured.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 , < cd37bcb67f909a8683cc8c38a63ac7367a7f6161 (git)
Affected: 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 , < 5da65537792b68b6052ffcab65e04c27aea6dfe4 (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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    "datePublished": "2026-08-28T06:48:33.340Z",
    "dateReserved": "2026-08-26T14:34:25.773Z",
    "dateUpdated": "2026-08-28T06:48:33.340Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
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      "cve": "CVE-2026-80610",
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      "title": "kernel: net: enetc: fix potential divide-by-zero when num_vsi is zero",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80610.json",
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}



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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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