Vulnerability Intelligence Report
Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()
CVE-2023-4004
A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.
No Active Exploit Signals
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:0.96%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | 0:4.18.0-477.27.1.rt7.290.el8_8 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8 | all |
| Red Hat | Red Hat Enterprise Linux 8 | 0:4.18.0-477.27.1.el8_8 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | 0:4.18.0-193.119.1.el8_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service | 0:4.18.0-193.119.1.rt13.170.el8_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service | 0:4.18.0-193.119.1.el8_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | all |
| Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | 0:4.18.0-193.119.1.el8_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:4.18.0-305.103.1.el8_4 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | 0:4.18.0-305.103.1.rt7.178.el8_4 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | 0:4.18.0-305.103.1.el8_4 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | 0:4.18.0-305.103.1.el8_4 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | all |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | all |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | 0:4.18.0-372.75.1.el8_6 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-284.30.1.el9_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-284.30.1.rt14.315.el9_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-284.30.1.el9_2 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9 | all |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:5.14.0-70.80.1.el9_0 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:5.14.0-70.80.1.rt21.151.el9_0 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | all |
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:4.18.0-372.75.1.el8_6 < * (unaffected) |
| Red Hat | Red Hat Enterprise Linux 6 | all |
| Red Hat | Red Hat Enterprise Linux 7 | all |
| Red Hat | Red Hat Enterprise Linux 7 | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.958%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Red Hat, Inc. · Vendor · USA |
| Reserved | 2023-07-30T11:58:17 |
| Published | 2023-07-31T16:22:18 |
| Patch Date | 2023-07-19 |
| Last Updated | 2025-11-08T03:13:35 |
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