CVE-2019-15878

Kernel panic via SCTP-AUTH key update use-after-free

Published May 13, 2020 · Updated Aug 5, 2024

Use-after-free in the FreeBSD 11.3 kernel before 11.3-RELEASE-p9 allows local users to trigger a kernel panic via SCTP-AUTH key updates. The SCTP layer fails to validate a shared-key update sequence before an association is closed, leaving kernel code to access freed state. Any unprivileged local account that can use the SCTP socket API can interrupt the host by causing the kernel panic.

CVSS severity7.8
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the FreeBSD 11.3 kernel before 11.3-RELEASE-p9 allows local users to trigger a kernel panic via SCTP-AUTH key updates. The SCTP layer fails to validate a shared-key update sequence before an association is closed, leaving kernel code to access freed state. Any unprivileged local account that can use the SCTP socket API can interrupt the host by causing the kernel panic.

The record

CVE
CVE-2019-15878
Published
May 13, 2020
Updated
Aug 5, 2024
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FreeBSD 11.3-RELEASE before p9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=FreeBSD 11.3-RELEASE before p9

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo