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vuln-cve/data/2026/98xxx/CVE-2026-98853.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-98853",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-25T10:25:14.376Z",
"datePublished": "2026-10-18T15:51:02.683Z",
"dateUpdated": "2026-11-10T18:15:20.032Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-11-10T18:15:20.032Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: gso: limit recursive IP-in-IP segmentation\n\nIP-in-IP GSO can re-enter inet_gso_segment() or ipv6_gso_segment()\nfor each nested IP header. encap_level tracks header bytes, not callback\ndepth, so a deep chain can exhaust the kernel stack. Making\ninet_gso_segment() stackable introduced unbounded IPv4 nesting; IPIP\nGSO/TSO later made the path reachable. The IPv6 stackable path was\nintroduced separately and uses the same guard.\n\nCount IPv4 and IPv6 GSO handler entries in skb_gso_cb, initialized once\nper top-level GSO operation and preserved across GRE/UDP context changes.\nUse the existing IP_TUNNEL_RECURSION_LIMIT for both handlers. The first\nfive entries pass, and the sixth returns -EINVAL before dispatching\nanother GSO callback."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/net/gso.h",
"net/core/gso.c",
"net/ipv4/af_inet.c",
"net/ipv6/ip6_offload.c"
],
"versions": [
{
"version": "3347c960295583eee3fd58e5c539fb1972fbc005",
"lessThan": "cadffc83ee1a560d5cd18e6d607c1d76f6fd4bd4",
"status": "affected",
"versionType": "git"
},
{
"version": "3347c960295583eee3fd58e5c539fb1972fbc005",
"lessThan": "388604279da3d0698a151efa4fb6d852efa0de4a",
"status": "affected",
"versionType": "git"
},
{
"version": "3347c960295583eee3fd58e5c539fb1972fbc005",
"lessThan": "c949646c900e879afce47df1b607fa320eb63bf2",
"status": "affected",
"versionType": "git"
},
{
"version": "3347c960295583eee3fd58e5c539fb1972fbc005",
"lessThan": "006c8b834aed8b02bd8fb9fb05e9e7ead37d1763",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"include/net/gso.h",
"net/core/gso.c",
"net/ipv4/af_inet.c",
"net/ipv6/ip6_offload.c"
],
"versions": [
{
"version": "3.13",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.13",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.117",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.60",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.10",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.12.117"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.18.60"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "7.2.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/cadffc83ee1a560d5cd18e6d607c1d76f6fd4bd4"
},
{
"url": "https://git.kernel.org/stable/c/388604279da3d0698a151efa4fb6d852efa0de4a"
},
{
"url": "https://git.kernel.org/stable/c/c949646c900e879afce47df1b607fa320eb63bf2"
},
{
"url": "https://git.kernel.org/stable/c/006c8b834aed8b02bd8fb9fb05e9e7ead37d1763"
}
],
"title": "net: gso: limit recursive IP-in-IP segmentation",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}