Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2025-21735: NFC: nci: Add bounds checking in nci_hci_create_pipe()

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: 0.38% (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 10b3f947b609713e04022101f492d288a014ddfa, 110b43ef05342d5a11284cc8b21582b698b4ef1c, 172cdfc3a5ea20289c58fb73dadc6fd4a8784a4e; azl3 kernel 6.6.64.2-9 on Azure Linux 3.0 6.6.78.1-3.

Low priority for now. Upgrade to Linux Linux 10b3f947b609713e04022101f492d288a014ddfa, 110b43ef05342d5a11284cc8b21582b698b4ef1c, 172cdfc3a5ea20289c58fb73dadc6fd4a8784a4e; azl3 kernel 6.6.64.2-9 on Azure Linux 3.0 6.6.78.1-3 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: nci: Add bounds checking in nci_hci_create_pipe() The "pipe" variable is a u8 which comes from the network. If it's more than 127, then it results in memory corruption in the caller, nci_hci_connect_gate().

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Feb 27, 2025
Updated
Oct 15, 2026
EPSS
0.3% · 32th percentile

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 · 0.3%

CNA vs NVD score

NVD
7.8
CNA · Linux
8.8
1.0 point gap

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

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.

Follow CVE-2025-21735

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.4 and later · before 6.1.129
  • linux linux kernel6.2 and later · before 6.6.78
  • linux linux kernel6.7 and later · before 6.12.14
  • linux linux kernel6.13 and later · before 6.13.3

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

    • 4.4affected
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before bd249109d266f1d52548c46634a15b71656e0d44affected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 674e17c5933779a8bf5c15d596fdfcb5ccdebbc2affected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 10b3f947b609713e04022101f492d288a014ddfaaffected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before d5a461c315e5ff92657f84d8ba50caa5abf5c22aaffected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 172cdfc3a5ea20289c58fb73dadc6fd4a8784a4eaffected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 2ae4bade5a64d126bd18eb66bd419005c5550218affected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 59c7ed20217c0939862fbf8145bc49d5b3a13f4faffected · git
    • a1b0b9415817c14d207921582f269d03f848b69f and later · before 110b43ef05342d5a11284cc8b21582b698b4ef1caffected · git
    • before 4.4not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.129-16.1.129-1
Debian:13linuxbefore 6.12.15-16.12.15-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-58020Feb 27, 2025 · HID: multitouch: Add NULL check in mt_input_configured
    22Monitor
  • ← EarlierCVE-2025-21732Feb 27, 2025 · RDMA/mlx5: Fix a race for an ODP MR which leads to CQE with error
    18Monitor
  • Later →CVE-2025-21738Feb 27, 2025 · ata: libata-sff: Ensure that we cannot write outside the allocated buffer
    22Monitor

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 Linux10b3f947b609713e04022101f492d288a014ddfaVendor (CNA)
Linux Linux110b43ef05342d5a11284cc8b21582b698b4ef1cVendor (CNA)
Linux Linux172cdfc3a5ea20289c58fb73dadc6fd4a8784a4eVendor (CNA)
Linux Linux2ae4bade5a64d126bd18eb66bd419005c5550218Vendor (CNA)
Linux Linux59c7ed20217c0939862fbf8145bc49d5b3a13f4fVendor (CNA)
Linux Linux674e17c5933779a8bf5c15d596fdfcb5ccdebbc2Vendor (CNA)
Linux Linuxbd249109d266f1d52548c46634a15b71656e0d44Vendor (CNA)
Linux Linuxd5a461c315e5ff92657f84d8ba50caa5abf5c22aVendor (CNA)
azl3 kernel 6.6.64.2-9 on Azure Linux 3.06.6.78.1-3 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.129-1 · 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.

No history yet (it accumulates with the daily EPSS job).

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)

CWE-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

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 (11 more)

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

All records