CVE-2026-31496 (GCVE-0-2026-31496)
Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54
VLAI?
Title
netfilter: nf_conntrack_expect: skip expectations in other netns via proc
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conntrack_expect: skip expectations in other netns via proc
Skip expectations that do not reside in this netns.
Similar to e77e6ff502ea ("netfilter: conntrack: do not dump other netns's
conntrack entries via proc").
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
9b03f38d0487f3908696242286d934c9b38f9d2a , < 2028405ea6987b4448784e439413202cfe19f43f
(git)
Affected: 9b03f38d0487f3908696242286d934c9b38f9d2a , < 168145c87444619e3e649322bbe7719ecd00d411 (git) Affected: 9b03f38d0487f3908696242286d934c9b38f9d2a , < dcfcd95b3ae7683e8ae55c92284b3430ce614bc7 (git) Affected: 9b03f38d0487f3908696242286d934c9b38f9d2a , < 9ca8c7452493d915f9bbf2f39331e6c583d07a23 (git) Affected: 9b03f38d0487f3908696242286d934c9b38f9d2a , < 3265ad619987cb551edaf797ed056d80ac450225 (git) Affected: 9b03f38d0487f3908696242286d934c9b38f9d2a , < 3db5647984de03d9cae0dcddb509b058351f0ee4 (git) |
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{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_conntrack_expect.c"
],
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{
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"lessThan": "2.6.28",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.168",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.80",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.21",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: skip expectations in other netns via proc\n\nSkip expectations that do not reside in this netns.\n\nSimilar to e77e6ff502ea (\"netfilter: conntrack: do not dump other netns\u0027s\nconntrack entries via proc\")."
}
],
"providerMetadata": {
"dateUpdated": "2026-04-22T13:54:18.287Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43f"
},
{
"url": "https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411"
},
{
"url": "https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7"
},
{
"url": "https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23"
},
{
"url": "https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225"
},
{
"url": "https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4"
}
],
"title": "netfilter: nf_conntrack_expect: skip expectations in other netns via proc",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31496",
"datePublished": "2026-04-22T13:54:18.287Z",
"dateReserved": "2026-03-09T15:48:24.102Z",
"dateUpdated": "2026-04-22T13:54:18.287Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-31496\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-22T14:16:47.693\",\"lastModified\":\"2026-04-22T14:16:47.693\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_conntrack_expect: skip expectations in other netns via proc\\n\\nSkip expectations that do not reside in this netns.\\n\\nSimilar to e77e6ff502ea (\\\"netfilter: conntrack: do not dump other netns\u0027s\\nconntrack entries via proc\\\").\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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