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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98417: net: xfrm: reject unrepresentable espintcp transport headers

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d, 327b2a457dd7d5445f7395f371f3c65de79bd5ce, 4a8243fd2e21980fa3fd10c0610e9155057cebd3.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d, 327b2a457dd7d5445f7395f371f3c65de79bd5ce, 4a8243fd2e21980fa3fd10c0610e9155057cebd3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Oct 14, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.6affected
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before d37a5b87577c4b4c1a1dcb000a9dff1df2cf886baffected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before 6c29681207bc213188afa603dff2d55e7178a341affected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before 4a8243fd2e21980fa3fd10c0610e9155057cebd3affected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before b2b84e73e0386ad0b4f9b8d3afde343e761f5275affected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before 327b2a457dd7d5445f7395f371f3c65de79bd5ceaffected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before cce630c751279e974fa0bb574d80575e0cc7e8f3affected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before 206f396f46149dc8bc4dfd2b54b9879ba3ee1d7daffected · git
    • e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 and later · before 96f01b53c2d05e003b040892256de54a586e8529affected · git
    • before 5.6not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98415Oct 14, 2026 · soc: samsung: exynos-pmu: fix use-after-free of interrupt generator node
    0Monitor
  • ← EarlierCVE-2026-98416Oct 14, 2026 · dmaengine: ti: k3-udma-glue: fix NULL dereference in k3_udma_glue_release_rx_chn()
    0Monitor
  • Later →CVE-2026-98418Oct 14, 2026 · sched/core: Avoid false migration warning for proxy donors
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux206f396f46149dc8bc4dfd2b54b9879ba3ee1d7dVendor (CNA)
Linux Linux327b2a457dd7d5445f7395f371f3c65de79bd5ceVendor (CNA)
Linux Linux4a8243fd2e21980fa3fd10c0610e9155057cebd3Vendor (CNA)
Linux Linux6c29681207bc213188afa603dff2d55e7178a341Vendor (CNA)
Linux Linux96f01b53c2d05e003b040892256de54a586e8529Vendor (CNA)
Linux Linuxb2b84e73e0386ad0b4f9b8d3afde343e761f5275Vendor (CNA)
Linux Linuxcce630c751279e974fa0bb574d80575e0cc7e8f3Vendor (CNA)
Linux Linuxd37a5b87577c4b4c1a1dcb000a9dff1df2cf886bVendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 5, 2026+22 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records