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NVD / CVE Program· CNA Linux

CVE-2026-80714: ipvs: do not propagate one-packet flag to synced conns

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.47% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 06d1d9b56ef8132fbf85006885eb43d9510b8b02, 300348e3ba1521b003d59825f97e24f9a6859688, 44af98cc7d5ef8e730488d5df1eecd5deeaa5947; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 06d1d9b56ef8132fbf85006885eb43d9510b8b02, 300348e3ba1521b003d59825f97e24f9a6859688, 44af98cc7d5ef8e730488d5df1eecd5deeaa5947; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1 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: do not propagate one-packet flag to synced conns Synced connections can be created before their destination exists. When the destination is later added, ip_vs_bind_dest() copies connection flags from the destination into cp->flags. IP_VS_CONN_F_ONE_PACKET connections are not synced. If a synced connection inherits IP_VS_CONN_F_ONE_PACKET while it is already hashed, expiry can treat it as a one-packet connection and skip unlinking the existing conn_tab node, leaving stale hash nodes pointing at a freed struct ip_vs_conn. Drop IP_VS_CONN_F_ONE_PACKET from destination flags when binding synced connections.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Aug 28, 2026
Updated
Oct 16, 2026
EPSS
0.4% · 41th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

If any of these changes, we'll tell you in the daily email digest.

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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

    • 2.6.36affected
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before 06d1d9b56ef8132fbf85006885eb43d9510b8b02affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before acbdc276091b308ca7794acb86e761f8203e2f59affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before 300348e3ba1521b003d59825f97e24f9a6859688affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before 44af98cc7d5ef8e730488d5df1eecd5deeaa5947affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before 4649e6faeecdc2d44bfa6ccbe405eef27e55d816affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before b5ee5b266f833601ac4817f6df0bc496fc376a28affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before e7acfc990c29890c883d0d0ce3f737d003a43b44affected · git
    • 26ec037f9841e49cc5c615deb8e1e73e5beab2ca and later · before a63d2dbaeb50a85d4c976b15a36e6b0c7113db5baffected · git
    • before 2.6.36not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernelbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-corebefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-cross-headersbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-debugbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-debug-corebefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-debug-develbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-develbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-docbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-headersbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-modulesbefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-modules-extrabefore 4.18.0-553.168.1.el8_104.18.0-553.168.1.el8_10
AlmaLinux:8kernel-rtbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-corebefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-debugbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-develbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10
AlmaLinux:8kernel-rt-modulesbefore 4.18.0-553.168.1.rt7.509.el8_104.18.0-553.168.1.rt7.509.el8_10

+96

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-2026-80709Aug 28, 2026 · s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
    31Monitor
  • ← EarlierCVE-2026-80710Aug 28, 2026 · s390/dasd: Fix undersized format-check buffer
    31Monitor
  • Later →CVE-2026-80715Aug 28, 2026 · igc: remove napi_synchronize() in igc_down()
    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 Linux06d1d9b56ef8132fbf85006885eb43d9510b8b02Vendor (CNA)
Linux Linux300348e3ba1521b003d59825f97e24f9a6859688Vendor (CNA)
Linux Linux44af98cc7d5ef8e730488d5df1eecd5deeaa5947Vendor (CNA)
Linux Linux4649e6faeecdc2d44bfa6ccbe405eef27e55d816Vendor (CNA)
Linux Linuxa63d2dbaeb50a85d4c976b15a36e6b0c7113db5bVendor (CNA)
Linux Linuxacbdc276091b308ca7794acb86e761f8203e2f59Vendor (CNA)
Linux Linuxb5ee5b266f833601ac4817f6df0bc496fc376a28Vendor (CNA)
Linux Linuxe7acfc990c29890c883d0d0ce3f737d003a43b44Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.152.1-1 · Release NotesMicrosoft (MSRC)
almalinux:bpftool4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-abi-stablelists4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-core4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-cross-headers4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-core4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-devel4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules-extra4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-devel4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-doc4.18.0-553.168.1.el8_10 · AlmaLinux:8Package registry (OSV)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.107-1~deb12u1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-553.168.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)

+7

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).

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

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

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. SSVC exploitation— → 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