ipvs: fix reversed sequence option serialization
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix reversed sequence option serialization hton_seq() expects the host-order source first and the unaligned network-order destination second. The version 1 sync sender passes these arguments in reverse for both sequence blocks. This leaves 24 bytes of the kmalloc-backed message unwritten. It may disclose stale heap data and replace the live connection sequence state with values read from the buffer. Pass the connection sequence state as the source and the message payload as the destination for both blocks.
CVE-2026-98078
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-2026-98078
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": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "ae38b2ae16f709c0193e1b4340bde26ef3e2687d",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "f487b5788f15c6c32a219ed1480d25c93fc18d30",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "677ff8ab30a663cde984d8afe86465fd0d81aeef",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "524599714558da83747c04952d378155c69f5b6b",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "de6cc6ec7932bc530f2bb92005dac9123d50659c",
"versionType": "git"
},
{
"status": "affected",
"version": "986a075795339c5ea1122ce9290dfd5504252eb0",
"lessThan": "b04578b74f2d3755548fe9e829e3b2a6c6f966a1",
"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": "2.6.39"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.39",
"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-2026-98078
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38187 · Revision 1
- Added to Heist Feed
- Publisher date