FKIE_CVE-2026-98233
Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/packet/af_packet.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "bb10a0084c03a94364aeec542beddc5d49b59f59",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "b8c0cb3069058c2d67b5c7c833b2833381ecffdc",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "2daa618e7ff19eefcbda281bc4c5998c4140f9cf",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "23cd30498891d29a69ec9b75bd92f8a0f21f1342",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "49a48a5aaf85fe69d2dc3fb334b4854fadf44e39",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "805edbdcb8681da5f7ee43b3c3c809f7a8c31208",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "693209a237fc548791cf402441db8b68d1da7d38",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"lessThan": "33ff111d7ba3beb86e28938d6382bb5beabd865a",
"status": "affected",
"version": "61fad6816fc10fb8793a925d5c1256d1c3db0cd2",
"versionType": "git"
},
{
"status": "affected",
"version": "2975472e042e0bbfeeabddc5023cb8c011ec5a07",
"versionType": "git"
},
{
"status": "affected",
"version": "6fb0e4385928900ccb8697748555b3f54bba5193",
"versionType": "git"
},
{
"status": "affected",
"version": "86137342fd4cf52882842aa8d1318b2661f08e8a",
"versionType": "git"
},
{
"status": "affected",
"version": "b06e4d3ed4044c2facf10a511d809f9aa29d960e",
"versionType": "git"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.175",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.114",
"versionType": "semver"
},
{
"lessThan": "5.5",
"status": "affected",
"version": "5.4.29",
"versionType": "semver"
},
{
"lessThan": "5.6",
"status": "affected",
"version": "5.5.14",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/packet/af_packet.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"lessThan": "5.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc4",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: clear RX owner on VNET header error\n\nCommit 61fad6816fc1 (\"net/packet: tpacket_rcv: avoid a producer race\ncondition\") added rx_owner_map and made tpacket_rcv() claim a V1 or V2\nring slot before converting the virtio-net header. If the conversion\nfails, the drop path leaves the slot claimed.\n\nWith a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves\nthe only slot unavailable, so the ring also drops the next valid packet.\n\nClear the ownership bit on this error path. TPACKET_V3 already clears\nits block state here."
}
],
"id": "CVE-2026-98233",
"lastModified": "2026-10-06T09:18:10.857",
"metrics": {},
"published": "2026-10-06T09:18:10.857",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/23cd30498891d29a69ec9b75bd92f8a0f21f1342"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2daa618e7ff19eefcbda281bc4c5998c4140f9cf"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/33ff111d7ba3beb86e28938d6382bb5beabd865a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/49a48a5aaf85fe69d2dc3fb334b4854fadf44e39"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/693209a237fc548791cf402441db8b68d1da7d38"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/805edbdcb8681da5f7ee43b3c3c809f7a8c31208"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b8c0cb3069058c2d67b5c7c833b2833381ecffdc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/bb10a0084c03a94364aeec542beddc5d49b59f59"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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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