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NVD / CVE Program· CNA Linux

CVE-2026-80875: ipvs: use parsed transport offset in TCP state lookup

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 2500fa3958b1ba51c2b065e39db1b04dfa7e23a2, 2d06e0897ce18228d199887f0823b431d841dd03, 5848e914b85e360a2dd9d19c00a72e2ea9617dd0.

Low priority for now. Upgrade to Linux Linux 2500fa3958b1ba51c2b065e39db1b04dfa7e23a2, 2d06e0897ce18228d199887f0823b431d841dd03, 5848e914b85e360a2dd9d19c00a72e2ea9617dd0 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: ipvs: use parsed transport offset in TCP state lookup TCP state handling reparses the skb to find the TCP header. For IPv6 it uses sizeof(struct ipv6hdr), while the surrounding IPVS code already parsed the packet with ip_vs_fill_iph_skb() and has the real transport-header offset in iph.len. This makes TCP state handling look at the wrong bytes when an IPv6 packet carries extension headers. Use the parsed transport offset passed down from ip_vs_set_state() when reading the TCP header. For IPv4 and for IPv6 packets without extension headers, the passed offset matches the previous value.

—No exploit Fix available
Published
Sep 4, 2026
Updated
Sep 4, 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%

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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

    • 2.6.28affected
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before 2d06e0897ce18228d199887f0823b431d841dd03affected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before 816efb7fc0aeae986e63ac73b428dd97a4ef69f5affected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before 5848e914b85e360a2dd9d19c00a72e2ea9617dd0affected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before d45f73c274435703e8d7bc9d8b742a5d9111ab6eaffected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before f6f550f26562d191c30b2818e7925dcb1c7f166caffected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before d73f4249776dd970ad65a69cfc51613dd8a034bbaffected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before c2ee845e292c278fac75bf28d96bc892607fd5c4affected · git
    • 0bbdd42b7efa66685b6d74701bcde3a596a3a59d and later · before 2500fa3958b1ba51c2b065e39db1b04dfa7e23a2affected · git
    • before 2.6.28not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-80873Sep 4, 2026 · KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
    0Monitor
  • ← EarlierCVE-2026-80874Sep 4, 2026 · arm64: dts: renesas: ironhide: Describe inline ECC carveouts
    0Monitor
  • Later →CVE-2026-80876Sep 4, 2026 · ring-buffer: Fix event length with forced 8-byte alignment
    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 Linux2500fa3958b1ba51c2b065e39db1b04dfa7e23a2Vendor (CNA)
Linux Linux2d06e0897ce18228d199887f0823b431d841dd03Vendor (CNA)
Linux Linux5848e914b85e360a2dd9d19c00a72e2ea9617dd0Vendor (CNA)
Linux Linux816efb7fc0aeae986e63ac73b428dd97a4ef69f5Vendor (CNA)
Linux Linuxc2ee845e292c278fac75bf28d96bc892607fd5c4Vendor (CNA)
Linux Linuxd45f73c274435703e8d7bc9d8b742a5d9111ab6eVendor (CNA)
Linux Linuxd73f4249776dd970ad65a69cfc51613dd8a034bbVendor (CNA)
Linux Linuxf6f550f26562d191c30b2818e7925dcb1c7f166cVendor (CNA)
debian:linux6.1.180-1 · 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.

No dated events beyond publication.

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).

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. Fix✗ → ✓

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References

Show all references (7 more)

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

All records