net: xfrm: reject unrepresentable espintcp transport headers
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.
CVE-2026-98417
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98417
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "6c29681207bc213188afa603dff2d55e7178a341",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "4a8243fd2e21980fa3fd10c0610e9155057cebd3",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "b2b84e73e0386ad0b4f9b8d3afde343e761f5275",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "327b2a457dd7d5445f7395f371f3c65de79bd5ce",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "cce630c751279e974fa0bb574d80575e0cc7e8f3",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "96f01b53c2d05e003b040892256de54a586e8529",
"versionType": "git"
}
],
"programFiles": [
"net/xfrm/espintcp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/xfrm/espintcp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98417
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38482 · Revision 1
- Added to Heist Feed
- Publisher date