ipvs: reject invalid states in connection template sync records
In the Linux kernel, the following vulnerability has been resolved: ipvs: reject invalid states in connection template sync records IPVS sync receivers validate protocol states before creating or updating a connection. For connection templates, however, they only log states outside the template state range and still store the value in the connection. A template can be returned by ordinary connection lookup. TCP and SCTP then use the invalid state as an index into their transition tables. Reject invalid template states in both sync protocol versions before looking up or modifying a connection. The version 1 path handles both IPv4 and IPv6 records.
CVE-2026-97596
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-2026-97596
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": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "5677e81ffdbfc1c03dcb427fb8b1c38289bed76d",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "d4eb339b442a0ffaa565779b975494a0a0664f18",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "1a8f15911352bb3cf4663aa02049c49c7f30e524",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "652d9caa5ac925ab012834e325d77b9ed638d4fc",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "fc10dc4511e6e2e2b4098ee115c8e5639471f23d",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "50c3f06222eafe9cca7ca51a0ef83311d7cab353",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "0c61f7d8e18a978aec2a16d9acd5f682f1c72476",
"versionType": "git"
},
{
"status": "affected",
"version": "275411430f892407b885be1de2548b2e632892c3",
"lessThan": "74cb39735b6cd0aff4b5584158f09376fd97aadf",
"versionType": "git"
}
],
"programFiles": [
"net/netfilter/ipvs/ip_vs_sync.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"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": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/ipvs/ip_vs_sync.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97596
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38038 · Revision 1
- Added to Heist Feed
- Publisher date