High

CVE-2025-40282 — Bluetooth: 6lowpan: reset link-local header on ipv6 recv path

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) ------

Published Dec 6, 2025 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.3% (30-day exploitation probability)+3
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.28%

ahead of 19% of scored CVEs · Oct 15, 2026

Affects

Linux

CVSS base

8.8

High · 3 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < ea46a1d217bc82e01cf3d0424e50ebfe251e34bf≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < 973e0271754c77db3e1b6b69adf2de85a79a4c8b≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < d566e9a2bfc848941b091ffd5f4e12c4e889d818≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < 4ebb90c3c309e6375dc3e841af92e2a039843e62≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < c24ac6cfe4f9a47180a65592c47e7a310d2f9d93≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < 11cd7e068381666f842ad41d1cc58eecd0c75237≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < 70d84e7c3a44b81020a3c3d650a64c63593405bd≥ 18722c247023035b9e2e2a08a887adec2a9a6e49 and < 3b78f50918276ab28fb22eac9aa49401ac436a3b and 1 more version 3.14	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Adjacent

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.8	CVSS 3.1	High	2.8	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
8.8	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
8.8	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67)

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 0.28%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 8.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Dec 6, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 15, 2026 – Oct 15, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

10 on the record

nvd.nist.gov/vuln/detail/CVE-2025-40282
GitHub Security Advisories
git.kernel.org/stable/c/c24ac6cfe4f9a47180a65592c47e7a310d2f9d93
NIST National Vulnerability Database
git.kernel.org/stable/c/3b78f50918276ab28fb22eac9aa49401ac436a3b
NIST National Vulnerability Database
git.kernel.org/stable/c/d566e9a2bfc848941b091ffd5f4e12c4e889d818
NIST National Vulnerability Database
git.kernel.org/stable/c/70d84e7c3a44b81020a3c3d650a64c63593405bd
NIST National Vulnerability Database
github.com/advisories/GHSA-5r7j-r8w6-f8xc
GitHub Security Advisories
git.kernel.org/stable/c/973e0271754c77db3e1b6b69adf2de85a79a4c8b
NIST National Vulnerability Database
git.kernel.org/stable/c/4ebb90c3c309e6375dc3e841af92e2a039843e62
NIST National Vulnerability Database
git.kernel.org/stable/c/11cd7e068381666f842ad41d1cc58eecd0c75237
NIST National Vulnerability Database
git.kernel.org/stable/c/ea46a1d217bc82e01cf3d0424e50ebfe251e34bf
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 9h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 9h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-40282 is "Bluetooth: 6lowpan: reset link-local header on ipv6 recv path", rated High. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. EPSS 0.28% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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