UnratedFix available
net: xfrm: reject unrepresentable espintcp transport headers
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: xfrm: reject unrepresentable espintcp transport headers ESP-in-TCP can hand xfrm packets whose transport header offset no longer fits after the stream parser trims the TCP envelope. The plain transport header reset truncates that offset and triggers the skb warning path. Use the careful transport-header helper and drop the skb through the existing XFRM error path when the offset cannot be represented.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.271, 5.15.222, 6.1.189, 6.12.112, 6.18.54, 6.6.158, 7.2.8
- CVEs
- CVE-2026-98417
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 00:55 UTC · Revision 1
Source evidence
net: xfrm: reject unrepresentable espintcp transport headers
core-osv · Original sourcePublished 14 Oct 2026, 13:27 UTC
In the Linux kernel, the following vulnerability has been resolved: net: xfrm: reject unrepresentable espintcp transport headers ESP-in-TCP can hand xfrm packets whose transport header offset no longer fits after the stream parser trims the TCP envelope. The plain transport header reset truncates that offset and triggers the skb warning path. Use the careful transport-header helper and drop the skb through the existing XFRM error path when the offset cannot be represented.
osv:CVE-2026-98417
Kernel
Fixed versions: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8
Complete source record
{
"id": "4d0addeff86af96415e6c9ce7de960ecbea31f88416dadb1d8577515351d88b3",
"url": "https://osv.dev/vulnerability/CVE-2026-98417",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: xfrm: reject unrepresentable espintcp transport headers",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: xfrm: reject unrepresentable espintcp transport headers ESP-in-TCP can hand xfrm packets whose transport header offset no longer fits after the stream parser trims the TCP envelope. The plain transport header reset truncates that offset and triggers the skb warning path. Use the careful transport-header helper and drop the skb through the existing XFRM error path when the offset cannot be represented.",
"evidence": "osv:CVE-2026-98417",
"products": [
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"name": {
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"value": "5.10.271",
"evidence": "/affected/1/ranges"
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{
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{
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{
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{
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{
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"severity": "unknown",
"structured": {
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"aliases": [
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"affected": [
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"package": {
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"ecosystem": "Linux"
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"database_specific": {
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"modified": "2026-10-28T02:30:41.078041697Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/327b2a457dd7d5445f7395f371f3c65de79bd5ce",
"https://git.kernel.org/stable/c/4a8243fd2e21980fa3fd10c0610e9155057cebd3",
"https://git.kernel.org/stable/c/6c29681207bc213188afa603dff2d55e7178a341",
"https://git.kernel.org/stable/c/96f01b53c2d05e003b040892256de54a586e8529",
"https://git.kernel.org/stable/c/b2b84e73e0386ad0b4f9b8d3afde343e761f5275",
"https://git.kernel.org/stable/c/cce630c751279e974fa0bb574d80575e0cc7e8f3",
"https://git.kernel.org/stable/c/d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98417.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-98417",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98417.json"
}
},
"related_cves": [
{
"value": "CVE-2026-98417",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 508759,
"published_at": "2026-10-14T13:27:47.816+00:00"
}