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CVE-2026-98417

net: xfrm: reject unrepresentable espintcp transport headers

No known exploitation. EPSS puts it in the 12th percentile. Fixed versions are out.

CVSS —Not scoredEPSS percentile12th0.2% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1 product4 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • LinuxAffected: ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < d37a5b87577c4b4c1a1dcb000a9dff1df2cf886bUpgrade to: d37a5b87577c4b4c1a1dcb000a9dff1df2cf886bAffected: ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 6c29681207bc213188afa603dff2d55e7178a341Upgrade to: 6c29681207bc213188afa603dff2d55e7178a341Affected: ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 4a8243fd2e21980fa3fd10c0610e9155057cebd3Upgrade to: 4a8243fd2e21980fa3fd10c0610e9155057cebd3Affected: ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < b2b84e73e0386ad0b4f9b8d3afde343e761f5275Upgrade to: b2b84e73e0386ad0b4f9b8d3afde343e761f5275 + 4 more branchesStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS12th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.2% chance of exploitation activity in the next 30 days, which ranks it in the 12th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

4 events over 8 days, from the signal feeds we watch.

  1. OpenVAS check added
  2. Record updated
  3. Publishedrecord updated

Affected products

Sources

References in the record

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