FKIE_CVE-2026-72052
Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-17 06:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
ip6gre_changelink() and ip6erspan_changelink() operate on at most two
netns, dev_net(dev) and the tunnel link netns t->net. They differ once
the device is created in or moved to a netns other than the one the
request runs in. The rtnl changelink path checks CAP_NET_ADMIN only
against dev_net(dev), so a caller privileged there but not in t->net can
rewrite a tunnel that lives in t->net.
Gate both ops on rtnl_dev_link_net_capable() at their top, before any
attribute is parsed.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_gre.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "129f8939e5af683cec3a1a5edcb40a64636ad81e",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "e3724dedf57761c6de52f4d604ec74f66fd61611",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "220162c9fedbe992da70d70f50a10da4f45f914c",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "1d4d8ee002083ca4ead5353662bf8362428af57f",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "0caa9f348f8b5356900de77b0bb89a697c4aff20",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "03d8843b143ebbbfaf48511922abc6e886575a61",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "c38c8b0db3c65b597e7ece317b6cb59de3d15e69",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"lessThan": "f00a50876d2818bd6dc86fa98b3ef360884c53c8",
"status": "affected",
"version": "690afc165bb314354667f67157c1a1aea7dc797a",
"versionType": "git"
},
{
"status": "affected",
"version": "d0201d2405dac8d9b16773e97709925e397552d0",
"versionType": "git"
},
{
"status": "affected",
"version": "7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a",
"versionType": "git"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.100",
"versionType": "semver"
},
{
"lessThan": "5.5",
"status": "affected",
"version": "5.4.16",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_gre.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"lessThan": "5.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"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: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink\n\nip6gre_changelink() and ip6erspan_changelink() operate on at most two\nnetns, dev_net(dev) and the tunnel link netns t-\u003enet. They differ once\nthe device is created in or moved to a netns other than the one the\nrequest runs in. The rtnl changelink path checks CAP_NET_ADMIN only\nagainst dev_net(dev), so a caller privileged there but not in t-\u003enet can\nrewrite a tunnel that lives in t-\u003enet.\n\nGate both ops on rtnl_dev_link_net_capable() at their top, before any\nattribute is parsed."
}
],
"id": "CVE-2026-72052",
"lastModified": "2026-08-17T06:18:03.330",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.0,
"impactScore": 6.0,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-08-15T06:21:14.523",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/03d8843b143ebbbfaf48511922abc6e886575a61"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0caa9f348f8b5356900de77b0bb89a697c4aff20"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/129f8939e5af683cec3a1a5edcb40a64636ad81e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1d4d8ee002083ca4ead5353662bf8362428af57f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/220162c9fedbe992da70d70f50a10da4f45f914c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c38c8b0db3c65b597e7ece317b6cb59de3d15e69"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e3724dedf57761c6de52f4d604ec74f66fd61611"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f00a50876d2818bd6dc86fa98b3ef360884c53c8"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
Loading…
Loading…
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.
Loading…
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.
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.
Loading…
Loading…