CVE-2026-97982 (GCVE-0-2026-97982)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23
VLAI
Title
net: ethernet: cortina: Fix budget accounting
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Fix budget accounting The gmac_rx() function returns the remaining NAPI budget, but its caller treats the return value as the number of packets received. An idle poll therefore reports a full budget and remains scheduled. Return the number of received packets instead. Preserve the existing free queue refill accounting by adding that count directly; continuing to subtract it from the budget would invert the refill behavior.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 , < 631c47e2e1154f2741c555b91df1b8cb99294c6a (git)
Affected: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 , < 0ef8eaef5806c84db2334111d6f299c246a592bc (git)
Affected: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 , < 94e06e12a376710587cfeea481b65e7c49747003 (git)
Affected: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 , < a0de06d0da78a3db53de65dfd7452cc6d111f703 (git)
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Linux Linux Affected: 4.16
Unaffected: 0 , < 4.16 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-09-25T10:18:58.208Z",
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    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Fix budget accounting\n\nThe gmac_rx() function returns the remaining NAPI budget, but its\ncaller treats the return value as the number of packets received. An\nidle poll therefore reports a full budget and remains scheduled.\n\nReturn the number of received packets instead. Preserve the existing\nfree queue refill accounting by adding that count directly; continuing\nto subtract it from the budget would invert the refill behavior."
          }
        ],
        "id": "CVE-2026-97982",
        "lastModified": "2026-09-25T11:17:26.230",
        "metrics": {},
        "published": "2026-09-25T11:17:26.230",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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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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  • 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.



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.