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NVD / CVE Program· CNA Linux

CVE-2026-80715: igc: remove napi_synchronize() in igc_down()

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: 0.16% (FIRST EPSS).
  • Fixed version: Linux Linux 3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668, 5ffab5b9589c50e4cfc0cf36ffd76c89422d4019, 605585a8d89aaeb0122e9016fdaa92376897a705; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668, 5ffab5b9589c50e4cfc0cf36ffd76c89422d4019, 605585a8d89aaeb0122e9016fdaa92376897a705; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 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: igc: remove napi_synchronize() in igc_down() When an AF_XDP zero-copy application is killed abruptly, the XSK pool is torn down but NAPI keeps polling. igc_clean_rx_irq_zc() then returns the full budget on every poll, so napi_complete_done() never clears NAPI_STATE_SCHED. igc_down() calls napi_synchronize() before napi_disable(), so it spins forever waiting for that bit and the interface never goes down. Drop the napi_synchronize() and let napi_disable() do the job -- it sets NAPI_STATE_DISABLE, which forces the stuck poll to complete. Reorder it ahead of igc_set_queue_napi() so the NAPI mapping is cleared only after polling has stopped, matching the recent igb fix b1e067240379.

—No exploit Fix available
Published
Aug 28, 2026
Updated
Nov 6, 2026
EPSS
0.1% · 5th 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 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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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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

    • 5.14affected
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before ad6e0df267dc96edb7de1fa0a2fb2a70645bff86affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before 605585a8d89aaeb0122e9016fdaa92376897a705affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before a0f16c337691813f8d8f014c01fff5a368e08898affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before 3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before 9a2b637aef4e515c2179774888441d00e8a5ae95affected · git
    • fc9df2a0b520d7d439ecf464794d53e91be74b93 and later · before 5ffab5b9589c50e4cfc0cf36ffd76c89422d4019affected · git
    • before 5.14not affected · semver
    • 5.15.217 and later · up to and including 5.15.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.107-1~deb12u16.12.107-1~deb12u1
Debian:13linuxbefore 6.12.105-16.12.105-1
Debian:14linuxbefore 7.1.8-17.1.8-1

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-2026-80710Aug 28, 2026 · s390/dasd: Fix undersized format-check buffer
    31Monitor
  • ← EarlierCVE-2026-80714Aug 28, 2026 · ipvs: do not propagate one-packet flag to synced conns
    39Monitor
  • Later →CVE-2026-80716Aug 28, 2026 · ALSA: pcm: wake linked drain waiters on unlink
    31Monitor

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 Linux3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668Vendor (CNA)
Linux Linux5ffab5b9589c50e4cfc0cf36ffd76c89422d4019Vendor (CNA)
Linux Linux605585a8d89aaeb0122e9016fdaa92376897a705Vendor (CNA)
Linux Linux9a2b637aef4e515c2179774888441d00e8a5ae95Vendor (CNA)
Linux Linuxa0f16c337691813f8d8f014c01fff5a368e08898Vendor (CNA)
Linux Linuxad6e0df267dc96edb7de1fa0a2fb2a70645bff86Vendor (CNA)
Linux Linuxf929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2Vendor (CNA)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.107-1~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.

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

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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (6 more)

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

All records