CVE-2026-98873 (GCVE-0-2026-98873)
Vulnerability from cvelistv5
Published
2026-10-23 11:37
Modified
2026-10-26 06:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conntrack_expect: zero at allocation time
There are occasional LLM hints wrt. leaking uninitialized data to
userspace via ctnetlink. Just zero at allocation time,
expectations are not frequently used these days.
Intentionally keeps _init as-is because we could theoretically
support re-init, so add the missing exp->dir there.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb Version: 076a0ca02644657b13e4af363f487ced2942e9cb |
||
{
"containers": {
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"net/netfilter/nf_conntrack_expect.c",
"net/netfilter/nf_conntrack_netlink.c"
],
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],
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{
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"status": "unaffected",
"version": "5.10.271",
"versionType": "semver"
},
{
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"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": "6.12.111",
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},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.53",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: zero at allocation time\n\nThere are occasional LLM hints wrt. leaking uninitialized data to\nuserspace via ctnetlink. Just zero at allocation time,\nexpectations are not frequently used these days.\n\nIntentionally keeps _init as-is because we could theoretically\nsupport re-init, so add the missing exp-\u003edir there."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-26T06:55:54.978Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/39cb6ff947c16a576ea68c5f272e634acdcb0085"
},
{
"url": "https://git.kernel.org/stable/c/90545aa07a183887e9d72ce573c18e08f62e2c91"
},
{
"url": "https://git.kernel.org/stable/c/9c11d7ea5ff4dbe162e79f00188814ef5483c295"
},
{
"url": "https://git.kernel.org/stable/c/b7f3ee925aee9f1f547d539bc03c35433c238958"
},
{
"url": "https://git.kernel.org/stable/c/824397af7bfe14edad374c64253dae0187ca623d"
},
{
"url": "https://git.kernel.org/stable/c/a39ecb856514274c80d0fac4d128dba6b266a8ed"
},
{
"url": "https://git.kernel.org/stable/c/241ccd2fed9051db443aadce248fc0ab30f55e97"
}
],
"title": "netfilter: nf_conntrack_expect: zero at allocation time",
"x_generator": {
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}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-98873",
"datePublished": "2026-10-23T11:37:14.109Z",
"dateReserved": "2026-09-25T10:25:14.377Z",
"dateUpdated": "2026-10-26T06:55:54.978Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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