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NVD / CVE Program· CNA Linux

CVE-2026-90225: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt

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 156e65bd29307f5053835bff60bc1ba342fa010f, 2d8ac24565be85bf56580b87bf1b874d35625eb5, 36812527052c5bfb1ec6c1e292d67a5bf76b750f.

Low priority for now. Upgrade to Linux Linux 156e65bd29307f5053835bff60bc1ba342fa010f, 2d8ac24565be85bf56580b87bf1b874d35625eb5, 36812527052c5bfb1ec6c1e292d67a5bf76b750f 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: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 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%

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

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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

    • 3.10affected
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before 56fd158fef20268f48db6cdfe5d722e930134edaaffected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before 8ba8cec0586727cc135ca4827921fc7b52946d71affected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before ed5240bab3468988077fe8bf29b935eaecc9ff89affected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before fe65727a4a21b11c18eebae1338482767a897b76affected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before 2d8ac24565be85bf56580b87bf1b874d35625eb5affected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before 156e65bd29307f5053835bff60bc1ba342fa010faffected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before d1b73962675cdc5a58e2707e25b548d8b495fde0affected · git
    • 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 and later · before 36812527052c5bfb1ec6c1e292d67a5bf76b750faffected · git
    • before 3.10not 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 7.2.6-17.2.6-1

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-2026-90223Sep 17, 2026 · nfc: llcp: bound SNL TLV parsing to the skb and add length checks
    28Monitor
  • ← EarlierCVE-2026-90224Sep 17, 2026 · nfc: nci: fix double completion race in nci_data_exchange_complete
    30Monitor
  • Later →CVE-2026-90226Sep 17, 2026 · nfc: llcp: avoid userspace overflow on invalid optlen
    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 Linux156e65bd29307f5053835bff60bc1ba342fa010fVendor (CNA)
Linux Linux2d8ac24565be85bf56580b87bf1b874d35625eb5Vendor (CNA)
Linux Linux36812527052c5bfb1ec6c1e292d67a5bf76b750fVendor (CNA)
Linux Linux56fd158fef20268f48db6cdfe5d722e930134edaVendor (CNA)
Linux Linux8ba8cec0586727cc135ca4827921fc7b52946d71Vendor (CNA)
Linux Linuxd1b73962675cdc5a58e2707e25b548d8b495fde0Vendor (CNA)
Linux Linuxed5240bab3468988077fe8bf29b935eaecc9ff89Vendor (CNA)
Linux Linuxfe65727a4a21b11c18eebae1338482767a897b76Vendor (CNA)
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).

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. 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