CVE-2026-98233 (GCVE-0-2026-98233)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
net/packet: clear RX owner on VNET header error
Summary
In the Linux kernel, the following vulnerability has been resolved: net/packet: clear RX owner on VNET header error Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race condition") added rx_owner_map and made tpacket_rcv() claim a V1 or V2 ring slot before converting the virtio-net header. If the conversion fails, the drop path leaves the slot claimed. With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves the only slot unavailable, so the ring also drops the next valid packet. Clear the ownership bit on this error path. TPACKET_V3 already clears its block state here.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < bb10a0084c03a94364aeec542beddc5d49b59f59 (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < b8c0cb3069058c2d67b5c7c833b2833381ecffdc (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 2daa618e7ff19eefcbda281bc4c5998c4140f9cf (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 23cd30498891d29a69ec9b75bd92f8a0f21f1342 (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 49a48a5aaf85fe69d2dc3fb334b4854fadf44e39 (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 805edbdcb8681da5f7ee43b3c3c809f7a8c31208 (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 693209a237fc548791cf402441db8b68d1da7d38 (git)
Affected: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 , < 33ff111d7ba3beb86e28938d6382bb5beabd865a (git)
Affected: 2975472e042e0bbfeeabddc5023cb8c011ec5a07 (git)
Affected: 6fb0e4385928900ccb8697748555b3f54bba5193 (git)
Affected: 86137342fd4cf52882842aa8d1318b2661f08e8a (git)
Affected: b06e4d3ed4044c2facf10a511d809f9aa29d960e (git)
Affected: 4.14.175 , < 4.15 (semver)
Affected: 4.19.114 , < 4.20 (semver)
Affected: 5.4.29 , < 5.5 (semver)
Affected: 5.5.14 , < 5.6 (semver)
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Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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          }
        ],
        "id": "CVE-2026-98233",
        "lastModified": "2026-10-06T09:18:10.857",
        "metrics": {},
        "published": "2026-10-06T09:18:10.857",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/bb10a0084c03a94364aeec542beddc5d49b59f59"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-09T16:45:57+00:00",
      "cve": "CVE-2026-98233",
      "id": "CVE-2026-98233",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "200",
      "product_status:known_not_affected": "77",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/packet: clear RX owner on VNET header error",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98233.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-08T16:49:40Z",
      "cve": "CVE-2026-98233",
      "id": "CVE-2026-98233",
      "initial_release_date": "2026-10-08T16:49:40Z",
      "product_status:known_affected": "208",
      "product_status:known_not_affected": "139",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98233",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98233.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

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.



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.