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NVD / CVE Program· CNA Linux

CVE-2026-80677: driver core: use READ_ONCE() for dev->driver in dev_has_sync_state()

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 358697929351f619143f59c6a8a15a4994748b79, 5.6, 51b3e1de53ee5b7775c7ff90e67fdb2665fce938.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 358697929351f619143f59c6a8a15a4994748b79, 5.6, 51b3e1de53ee5b7775c7ff90e67fdb2665fce938 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: driver core: use READ_ONCE() for dev->driver in dev_has_sync_state() dev_has_sync_state() reads dev->driver twice without holding device_lock() -- once for the NULL check and once to dereference ->sync_state. Some callers only hold device_links_write_lock, which doesn't prevent a concurrent unbind from clearing dev->driver via device_unbind_cleanup(). Fix it by reading dev->driver exactly once with READ_ONCE(), pairing with the WRITE_ONCE() in device_set_driver().

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 28, 2026
Updated
Oct 16, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
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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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

    • 6d88283a49425eb469aa60ffebe76539e73c933e, 5.6affected
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 89789e4c141904506163dcb91c7289a074573931affected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 51b3e1de53ee5b7775c7ff90e67fdb2665fce938affected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 358697929351f619143f59c6a8a15a4994748b79affected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 5e79e0180515b31b2e2244dc3d256fd8b5a07021affected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 860885fcd2611bca8c28dac8b2c1c7ff160f763eaffected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before cc77f0d91e3214e4292208f02a1dc09a31f9aac7affected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before 9b0f4082a09760939588135d60a8e9cc994bfa3eaffected · git
    • ac338acf514e7b578fa9e3742ec2c292323b4c1a and later · before e9506871a8ea304cde48ff4a57226df2aadddae3affected · git
    • 5.5.13 and later · before 5.6affected · 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-2026-80668Aug 28, 2026 · netfilter: nf_conntrack_expect: use conntrack GC to reap expectations
    39Monitor
  • ← EarlierCVE-2026-80676Aug 28, 2026 · Drivers: hv: vmbus: use generic driver_override infrastructure
    0Monitor
  • Later →CVE-2026-80678Aug 28, 2026 · i2c: imx: Fix slave registration race and error handling
    33Monitor

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 Linux358697929351f619143f59c6a8a15a4994748b79Vendor (CNA)
Linux Linux5.6Vendor (CNA)
Linux Linux51b3e1de53ee5b7775c7ff90e67fdb2665fce938Vendor (CNA)
Linux Linux5e79e0180515b31b2e2244dc3d256fd8b5a07021Vendor (CNA)
Linux Linux860885fcd2611bca8c28dac8b2c1c7ff160f763eVendor (CNA)
Linux Linux89789e4c141904506163dcb91c7289a074573931Vendor (CNA)
Linux Linux9b0f4082a09760939588135d60a8e9cc994bfa3eVendor (CNA)
Linux Linuxcc77f0d91e3214e4292208f02a1dc09a31f9aac7Vendor (CNA)
Linux Linuxe9506871a8ea304cde48ff4a57226df2aadddae3Vendor (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).

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

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • 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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/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