High Logic error

CVE-2022-3564 — Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free

A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211087.

Published Oct 17, 2022 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: VulDB

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 1.4% (30-day exploitation probability)+11
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

1.43%

ahead of 73% of scored CVEs · Oct 14, 2026

Affects

Debian

Debian Linux and 5 more

CVSS base

7.1

High · 4 source(s)

Prioritization reference: 8.0 provisional

Remediation

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

Documented patch — git.kernel.org (NIST National Vulnerability Database)

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 (Debian Debian Linux, Linux Linux Kernel, Netapp H300s Firmware…).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes matching the vulnerability class (logic error), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Debian	Debian Linux	version 10.0	Vulnerable	NIST National Vulnerability Database
Linux	Linux Kernel	≥ 3.6 and < 4.9.333≥ 4.10 and < 4.14.299≥ 4.15 and < 4.19.265≥ 4.20 and < 5.4.224≥ 5.5.0 and < 5.10.154≥ 5.11 and < 5.15.78≥ 5.16 and < 6.0.8	Vulnerable	NIST National Vulnerability Database
Netapp	H300s Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Netapp	H410s Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Netapp	H500s Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Netapp	H700s Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database

Attack characteristics

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

Attack vector

Adjacent

Attack complexity

High

Privileges required

Low

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
8.0	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
7.1	CVSS 3.1	High	1.2	5.9	nvd@nist.gov via NIST National Vulnerability Database
5.5	CVSS 3.1	Medium	2.1	3.4	cna@vuldb.com via NIST National Vulnerability Database
5.5	CVSS 3.1	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Sources assign different scores within the same severity band. For prioritization we use 8.0 (GitHub, Inc. via GitHub Security Advisories) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-362 · Race Condition

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 1.43%

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
Record published
Oct 14, 2026
Fix documented
Oct 14, 2026 · NIST National Vulnerability Database
Affected products added · linux/linux kernel, debian/debian linux, netapp/h300s firmware, netapp/h500s firmware, netapp/h700s firmware, netapp/h41
Oct 14, 2026 · NIST National Vulnerability Database
CVSS changed · 7.1
Oct 14, 2026 · NIST National Vulnerability Database
Source status changed · → Modified
Oct 14, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 14, 2026 · Alertas do Telegram
2022
CVE published
Oct 17, 2022 · VulDB

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 14, 2026 – Oct 14, 2026
1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

8 on the record

git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/
Patch, NIST National Vulnerability Database
github.com/advisories/GHSA-hjfq-c3jw-r92p
GitHub Security Advisories
security.netapp.com/advisory/ntap-20221223-0001/
Third Party Advisory, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2022-3564
GitHub Security Advisories
lists.debian.org/debian-lts-announce/2022/12/msg00031.html
Mailing List, Third Party Advisory, mailing-list, NIST National Vulnerability Database
vuldb.com/
Third Party Advisory, NIST National Vulnerability Database
cert-portal.siemens.com/productcert/html/ssa-794697.html
NIST National Vulnerability Database
lists.debian.org/debian-lts-announce/2022/12/msg00034.html
Mailing List, Third Party Advisory, mailing-list, NIST National Vulnerability Database

Elsewhere on this site

Debian
every CVE for this vendor

Logic error
same class

CWE-362
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-98164 KVM: x86/mmu: Check write tracking in all address spaces 16d
High CVE-2026-98163 cgroup: Avoid iteration of dying tasks with zero refcount 19d
Medium CVE-2026-98162 smb/server: fix tree connection leak in smb2_tree_connect() 20d
Medium CVE-2026-98160 In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs… 20d
Medium CVE-2026-98161 Improper Check for Unusual or Exceptional Conditions in Linux Linux Kernel 20d
Medium CVE-2026-100079 Missing Release of Resource after Effective Lifetime in Linux Linux Kernel 20d

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 CISA SSVC assessment.
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-2022-3564 is "Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free", rated High. It affects Debian Linux (Debian); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.1 describes technical severity. EPSS 1.43% 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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