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CVE-2023-5197

Use-after-free in Linux kernel's netfilter: nf_tables component

publishedCWE-416

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free. We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.

Technical severity7.8 highCVSS 3.1 · CNA: Google
Published2023-09-26Source updated 2026-11-02
Collected2026-11-033 attributed sources

Fixes and workarounds

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: Google

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: ADP: CVE

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: [email protected]

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: [email protected]

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: af854a3a-2127-422b-91ae-364da2661108

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: af854a3a-2127-422b-91ae-364da2661108

Affected products and versions

ProductVersionsAuthority
Kernel
Linux
kernel 		≥ 5.9; < 6.6 (affected, custom)
Other versions: unaffected 		CNA: Google
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Siemens 		≥ 0; < V1.1 (affected, custom)
Other versions: unknown 		ADP: siemens-SADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

NVD applicability configurations (1)

These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.

[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.10.198",
            "versionStartIncluding": "5.9.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.15.134",
            "versionStartIncluding": "5.11",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.1.56",
            "versionStartIncluding": "5.16",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.5.6",
            "versionStartIncluding": "6.2",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]

CVSS assessments

Version / scoreVectorAuthority
3.1 / 7.8
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCNA: Google
3.1 / 6.6
medium		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:HNVD: [email protected]
3.1 / 7.8
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD: [email protected]

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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