CVE-2023-6817 (GCVE-0-2023-6817)

Vulnerability from cvelistv5 – Published: 2023-12-18 14:37 – Updated: 2026-05-12 10:41
VLAI?
Title
Use-after-free in Linux kernel's netfilter: nf_tables component
Summary
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Kernel Affected: 5.6 , < 6.7 (custom)
Create a notification for this product.
Date Public ?
2023-12-06 16:14
Credits
Lonial Kong Xingyuan Mo
Show details on NVD website
To clipboard 

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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-6817\",\"sourceIdentifier\":\"cve-coordination@google.com\",\"published\":\"2023-12-18T15:15:10.210\",\"lastModified\":\"2026-05-12T11:16:18.570\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A use-after-free vulnerability in the Linux kernel\u0027s netfilter: nf_tables component can be exploited to achieve local privilege escalation.\\n\\nThe function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.\\n\\nWe recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de use after free en el componente netfilter: nf_tables del kernel de Linux puede explotarse para lograr una escalada de privilegios local. La funci\u00f3n nft_pipapo_walk no omiti\u00f3 elementos inactivos durante el recorrido establecido, lo que podr\u00eda provocar desactivaciones dobles de elementos PIPAPO (Pol\u00edticas de paquetes de pila), lo que llevar\u00eda a un use-after-free. Recomendamos actualizar despu\u00e9s del commit 317eb9685095678f2c9f5a8189de698c5354316a.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"cve-coordination@google.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.6\",\"versionEndExcluding\":\"5.10.204\",\"matchCriteriaId\":\"BC30ED73-012F-4A4F-8B31-553F3A6D05BB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.143\",\"matchCriteriaId\":\"B9718AD7-A70A-4A63-90EE-B47010C352E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.68\",\"matchCriteriaId\":\"D73554E0-C1EE-48CC-9FDB-4B66000FEB58\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.7\",\"matchCriteriaId\":\"38CB764D-606E-4695-8437-DD35E0B1A6FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"3A0038DE-E183-4958-A6E3-CE3821FEAFBF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"E31AD4FC-436C-44AB-BCAB-3A0B37F69EE0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"C56C6E04-4F04-44A3-8DB8-93899903CFCF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C78EDA4-8BE6-42FC-9512-49032D525A55\"}]}]}],\"references\":[{\"url\":\"http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html\",\"source\":\"cve-coordination@google.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2023/12/22/13\",\"source\":\"cve-coordination@google.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2023/12/22/6\",\"source\":\"cve-coordination@google.com\"},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a\",\"source\":\"cve-coordination@google.com\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a\",\"source\":\"cve-coordination@google.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html\",\"source\":\"cve-coordination@google.com\"},{\"url\":\"http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2023/12/22/13\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2023/12/22/6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-398330.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}"
  }
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.