CVE-2026-97596: Linux kernel · ipvs: reject invalid states in connection template sync records
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that rejects invalid template states in IPVS sync protocol versions before connection lookup or modification. Users should apply the official patches or updates provided for the affected linux-hwe-edge kernel versions. Since this is a kernel-level vulnerability, updating to a fixed kernel version is the recommended remediation.
Description
A vulnerability in the Linux kernel's IPVS component allows invalid states in connection template sync records to be stored and used, potentially leading to incorrect connection handling. The flaw arises because IPVS sync receivers do not reject invalid template states, which TCP and SCTP then use as indexes into their transition tables. This issue affects specific Linux kernel versions and has been resolved by rejecting invalid template states before connection modification.
References
- ubuntu.com/security/CVE-2026-97596 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97596 (opens in a new tab)
- git.kernel.org/stable/c/fc10dc4511e6e2e2b4098ee115c8e5639471f23d (opens in a new tab)
- git.kernel.org/stable/c/0c61f7d8e18a978aec2a16d9acd5f682f1c72476 (opens in a new tab)
- git.kernel.org/stable/c/74cb39735b6cd0aff4b5584158f09376fd97aadf (opens in a new tab)
- git.kernel.org/stable/c/50c3f06222eafe9cca7ca51a0ef83311d7cab353 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97596 (opens in a new tab)
- git.kernel.org/stable/c/1a8f15911352bb3cf4663aa02049c49c7f30e524 (opens in a new tab)
- git.kernel.org/stable/c/5677e81ffdbfc1c03dcb427fb8b1c38289bed76d (opens in a new tab)
- git.kernel.org/stable/c/652d9caa5ac925ab012834e325d77b9ed638d4fc (opens in a new tab)
- git.kernel.org/stable/c/d4eb339b442a0ffaa565779b975494a0a0664f18 (opens in a new tab)