Skip to content
Noroxi
CVE-2025-40282· NVD / CVE Program· CNA Linux

Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 0.28% (FIRST EPSS).
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 11cd7e068381666f842ad41d1cc58eecd0c75237, 3b78f50918276ab28fb22eac9aa49401ac436a3b, 4ebb90c3c309e6375dc3e841af92e2a039843e62.

Low priority for now. Upgrade to Linux Linux 11cd7e068381666f842ad41d1cc58eecd0c75237, 3b78f50918276ab28fb22eac9aa49401ac436a3b, 4ebb90c3c309e6375dc3e841af92e2a039843e62 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: Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local header for RX skb, otherwise things crash, eg. with AF_PACKET SOCK_RAW Add missing skb_reset_mac_header() for uncompressed ipv6 RX path. For the compressed one, it is done in lowpan_header_decompress(). Log: (BlueZ 6lowpan-tester Client Recv Raw - Success) ------ kernel BUG at net/core/skbuff.c:212! Call Trace: <IRQ> ... packet_rcv (net/packet/af_packet.c:2152) ... <TASK> __local_bh_enable_ip (kernel/softirq.c:407) netif_rx (net/core/dev.c:5648) chan_recv_cb (net/bluetooth/6lowpan.c:294 net/bluetooth/6lowpan.c:359) ------

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Dec 6, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 19th percentile
CWE
—

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
—
CNA · Linux
8.8
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.

Follow CVE-2025-40282

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.

—

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

    • 3.14affected
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before ea46a1d217bc82e01cf3d0424e50ebfe251e34bfaffected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before 973e0271754c77db3e1b6b69adf2de85a79a4c8baffected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before d566e9a2bfc848941b091ffd5f4e12c4e889d818affected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before 4ebb90c3c309e6375dc3e841af92e2a039843e62affected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before c24ac6cfe4f9a47180a65592c47e7a310d2f9d93affected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before 11cd7e068381666f842ad41d1cc58eecd0c75237affected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before 70d84e7c3a44b81020a3c3d650a64c63593405bdaffected · git
    • 18722c247023035b9e2e2a08a887adec2a9a6e49 and later · before 3b78f50918276ab28fb22eac9aa49401ac436a3baffected · git
    • before 3.14not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.9-16.17.9-1

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-2025-40279Dec 6, 2025 · net: sched: act_connmark: initialize struct tc_ife to fix kernel leak
    0Monitor
  • ← EarlierCVE-2025-40281Dec 6, 2025 · sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto
    0Monitor
  • Later →CVE-2025-40283Dec 6, 2025 · Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF
    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 Linux11cd7e068381666f842ad41d1cc58eecd0c75237Vendor (CNA)
Linux Linux3b78f50918276ab28fb22eac9aa49401ac436a3bVendor (CNA)
Linux Linux4ebb90c3c309e6375dc3e841af92e2a039843e62Vendor (CNA)
Linux Linux70d84e7c3a44b81020a3c3d650a64c63593405bdVendor (CNA)
Linux Linux973e0271754c77db3e1b6b69adf2de85a79a4c8bVendor (CNA)
Linux Linuxc24ac6cfe4f9a47180a65592c47e7a310d2f9d93Vendor (CNA)
Linux Linuxd566e9a2bfc848941b091ffd5f4e12c4e889d818Vendor (CNA)
Linux Linuxea46a1d217bc82e01cf3d0424e50ebfe251e34bfVendor (CNA)
debian:linux6.1.159-1 · 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).

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • 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
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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