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CVE-2026-97982· NVD / CVE Program· CNA Linux

net: ethernet: cortina: Fix budget accounting

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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 0ef8eaef5806c84db2334111d6f299c246a592bc, 4ca84049c6428c665ef7c903a32a99ed0f1e01e9, 631c47e2e1154f2741c555b91df1b8cb99294c6a; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0ef8eaef5806c84db2334111d6f299c246a592bc, 4ca84049c6428c665ef7c903a32a99ed0f1e01e9, 631c47e2e1154f2741c555b91df1b8cb99294c6a; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: net: ethernet: cortina: Fix budget accounting The gmac_rx() function returns the remaining NAPI budget, but its caller treats the return value as the number of packets received. An idle poll therefore reports a full budget and remains scheduled. Return the number of received packets instead. Preserve the existing free queue refill accounting by adding that count directly; continuing to subtract it from the budget would invert the refill behavior.

—No exploit Fix available
Published
Sep 25, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 6th 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%

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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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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

    • 4.16affected
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before d3deb54d9507c2d7f05efd896142095eef5b7d85affected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before e6e5732b90d0fc25fd3d9961ff61e660297d7608affected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before aa339ac334d4e51f43af9d2901e6faf11ffd981eaffected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before 4ca84049c6428c665ef7c903a32a99ed0f1e01e9affected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before 631c47e2e1154f2741c555b91df1b8cb99294c6aaffected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before 0ef8eaef5806c84db2334111d6f299c246a592bcaffected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before 94e06e12a376710587cfeea481b65e7c49747003affected · git
    • 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 and later · before a0de06d0da78a3db53de65dfd7452cc6d111f703affected · git
    • before 4.16not 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 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.7-17.2.7-1

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-2026-97980Sep 25, 2026 · s390/debug: Fix NULL pointer dereference in debug_set_level()
    0Monitor
  • ← EarlierCVE-2026-97981Sep 25, 2026 · net: ethernet: cortina: Count dropped frames as NAPI work
    0Monitor
  • Later →CVE-2026-97983Sep 25, 2026 · vduse: return compat ioctl results directly
    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 Linux0ef8eaef5806c84db2334111d6f299c246a592bcVendor (CNA)
Linux Linux4ca84049c6428c665ef7c903a32a99ed0f1e01e9Vendor (CNA)
Linux Linux631c47e2e1154f2741c555b91df1b8cb99294c6aVendor (CNA)
Linux Linux94e06e12a376710587cfeea481b65e7c49747003Vendor (CNA)
Linux Linuxa0de06d0da78a3db53de65dfd7452cc6d111f703Vendor (CNA)
Linux Linuxaa339ac334d4e51f43af9d2901e6faf11ffd981eVendor (CNA)
Linux Linuxd3deb54d9507c2d7f05efd896142095eef5b7d85Vendor (CNA)
Linux Linuxe6e5732b90d0fc25fd3d9961ff61e660297d7608Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~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. 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