CVE-2023-3107

Remote denial of service in IPv6 fragment reassembly

HIGH
7.5
CVSS Score
Published: August 1, 2023 at 10:01 PM UTC
Updated: June 17, 2026 at 06:13 AM UTC
2 products affected across 2 vendorsFreeBSDClustered Data ONTAP

Using FreeBSD by FreeBSD?

Get instant alerts when new vulnerabilities affect FreeBSD - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet's payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

12.4-RELEASE ≤ v < 12.4-RELEASE-p413.1-RELEASE ≤ v < 13.1-RELEASE-p913.2-RELEASE ≤ v < 13.2-RELEASE-p212.412.4 p112.4 p212.4 p312.4 rc2-p112.4 rc2-p212.4-RELEASE13.113.1 b1-p113.1 b2-p213.1 p113.1 p213.1 p313.1 p413.1 p513.1 p613.1 p713.1 p813.1 rc1-p113.1-RELEASE13.213.2 p113.2-RELEASE
Affected range stops below 12.4-RELEASE-p4, so it looks safe — our inference, not a vendor statement
Affected range stops below 13.1-RELEASE-p9, so it looks safe — our inference, not a vendor statement
Affected range stops below 13.2-RELEASE-p2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card