CVE-2023-1095

System crash via uninitialized transaction list

Published Feb 28, 2023 · Updated Mar 18, 2025

NULL pointer dereference in Linux Kernel before 6.0-rc1 allows local users to crash the system through a failed nftables table update. In nf_tables_updtable, an nf_tables_table_enable error sends a transaction that was never linked into a list to nft_trans_destroy, whose list_del operation dereferences the zeroed list head. A local low-privileged user must reach the nftables table-update error path; successful exploitation interrupts the entire host without disclosing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux Kernel before 6.0-rc1 allows local users to crash the system through a failed nftables table update. In nf_tables_updtable, an nf_tables_table_enable error sends a transaction that was never linked into a list to nft_trans_destroy, whose list_del operation dereferences the zeroed list head. A local low-privileged user must reach the nftables table-update error path; successful exploitation interrupts the entire host without disclosing or modifying data.

The record

CVE
CVE-2023-1095
Published
Feb 28, 2023
Updated
Mar 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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?

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

  1. Affected versionversion=Fixed in 6.0-rc1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Fixed in 6.0-rc1

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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

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Your stack

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