CVE-2017-1000112 (GCVE-0-2017-1000112)
Vulnerability from cvelistv5 – Published: 2017-10-04 01:00 – Updated: 2024-08-05 21:53
VLAI
EPSS
VEX
Summary
Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.
Severity
7.0 (High)
CWE
- n/a
Assigner
References
13 references
Date Public
2017-10-03 00:00
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},
{
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"tags": [
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],
"url": "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112"
},
{
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-362"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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]
},
"nvd": {
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{
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"value": "Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb-\u003elen becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev-\u003elen - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005."
},
{
"lang": "es",
"value": "Linux kernel: Existe una corrupci\u00f3n de memoria explotable debida al cambio de ruta de UFO a no UFO. Al crear un paquete UFO con MSG_MORE, __ip_append_data() llama a ip_ufo_append_data() para que se anexe. Sin embargo, entre dos llamadas send(), la ruta anexa puede cambiarse de UFO a no UFO, lo que lleva a una corrupci\u00f3n de memoria. Si la longitud del paquete UFO sobrepasa el MTU, copy = maxfraglen - skb-\u003elen se convierte en negativo en la ruta no UFO y se toma una rama para asignar un nuevo skb. Esto desencadena la fragmentaci\u00f3n y el c\u00e1lculo de fraggap = skb_prev-\u003elen - maxfraglen. fraggap puede exceder el MTU, lo que provoca que copy = datalen - transhdrlen - fraggap se vuelva negativo. En consecuencia, skb_copy_and_csum_bits() escribe fuera de l\u00edmites. Existe un problema similar en el c\u00f3digo IPv6. Este error fue introducido en e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") el 18 de octubre de 2005."
}
],
"id": "CVE-2017-1000112",
"lastModified": "2026-05-13T00:24:29.033",
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"source": "nvd@nist.gov",
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"source": "nvd@nist.gov",
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"published": "2017-10-05T01:29:04.477",
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},
{
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],
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},
{
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],
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}
],
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},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-06-28T11:08:40+00:00",
"cve": "CVE-2017-1000112",
"id": "CVE-2017-1000112",
"initial_release_date": "2017-08-10T00:00:00+00:00",
"product_status:fixed": "550",
"product_status:known_affected": "16",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Exploitable memory corruption due to UFO to non-UFO path switch",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-1000112.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-27T01:25:14Z",
"cve": "CVE-2017-1000112",
"id": "CVE-2017-1000112",
"initial_release_date": "2023-02-15T04:35:24Z",
"product_status:known_affected": "146",
"product_status:known_not_affected": "8",
"product_status:recommended": "417",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2017-1000112",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-1000112.json",
"version": "24"
}
}
}
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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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