CVE-2023-1074Public exploit

Kernel-address disclosure via empty SCTP address list

Published Mar 27, 2023 · Updated Mar 19, 2025

Type confusion in the Linux kernel SCTP diagnostic handler allows local users to disclose kernel address data through a crafted socket. inet_diag_msg_sctpasoc_fill() applies list_entry() to an empty association address list, causing an endpoint pointer to be returned as IPv6 address data. A low-privileged local process must create an SCTP socket with mismatched IPv6 scopes and query the diagnostic interface; the disclosure weakens KASLR without directly altering data or stopping service.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in the Linux kernel SCTP diagnostic handler allows local users to disclose kernel address data through a crafted socket. inet_diag_msg_sctpasoc_fill() applies list_entry() to an empty association address list, causing an endpoint pointer to be returned as IPv6 address data. A low-privileged local process must create an SCTP socket with mismatched IPv6 scopes and query the diagnostic interface; the disclosure weakens KASLR without directly altering data or stopping service.

The record

CVE
CVE-2023-1074
Published
Mar 27, 2023
Updated
Mar 19, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=unknown

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=unknown

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5OracleCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime

Public exploit references

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

Technologies

Your stack

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Your stack

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