CVE-2026-64412 (GCVE-0-2026-64412)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-10-19 20:38
VLAI
Title
netfilter: ebtables: module names must be null-terminated
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: module names must be null-terminated We need to explicitly check the length, else we may pass non-null terminated string to request_module().
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:40 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 43dd2332b8a27b3ac5108791680cade654ab0f96 (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 5777c8f1c3610786d8482b8f620f40fccaf1542b (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 0ddca0f90fa3395111d078ae4399615cf3ea94aa (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < d2367d99f2455f373996d9ddbe833dbe9f942213 (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < da32e78bbb187ed7b137e0007034185570a3a172 (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 13a5f532e3a4fc75c33060a026def1572c208643 (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 7b217960e88b5d2d1e8cdcbcaf3bdf6fe199a0c8 (git)
Affected: bcf4934288402be3464110109a4dae3bd6fb3e93 , < 084d23f818321390509e9738a0b08bbf46df6425 (git)
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Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.7 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.7 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.7 , < * (custom)
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                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.96",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.18.*",
                  "status": "unaffected",
                  "version": "6.18.39",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "7.1.*",
                  "status": "unaffected",
                  "version": "7.1.4",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "7.2",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.261",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.212",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.178",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.145",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.96",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18.39",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.1.4",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.2",
                      "versionStartIncluding": "4.6",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: module names must be null-terminated\n\nWe need to explicitly check the length, else we may pass non-null\nterminated string to request_module()."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The vulnerable ebtables replacement path is reached through a local setsockopt syscall, not through received network traffic.\nAC:L - The attacker controls the complete table blob, including offsets, allocation size, and unterminated match name; no race or uncontrollable condition is required.\nPR:L - The path requires CAP_NET_ADMIN in the socket network namespace, which an unprivileged user can obtain by creating user and network namespaces on deployments permitting unprivileged user namespaces.\nUI:N - Exploitation requires no action by another user after the attacker invokes setsockopt with the crafted table.\nS:U - The vulnerability affects the host kernel within the same security authority and does not cross a virtualization or IOMMU boundary.\nC:H - The unbounded %s traversal constitutes an out-of-bounds kernel read that can continue beyond the match-name field and table allocation; under the required higher-severity treatment for unbounded OOB reads, confidentiality impact is High.\nI:N - The vulnerable operation only reads while formatting a module name; there is no demonstrated out-of-bounds write, use-after-free, or control-flow modification primitive.\nA:H - A page-aligned nonzero table blob can make vsnprintf scan into the vmalloc guard page, causing a kernel oops or panic, and the attacker can repeat the trigger."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-17T04:55:11.246Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/43dd2332b8a27b3ac5108791680cade654ab0f96"
            },
            {
              "url": "https://git.kernel.org/stable/c/5777c8f1c3610786d8482b8f620f40fccaf1542b"
            },
            {
              "url": "https://git.kernel.org/stable/c/0ddca0f90fa3395111d078ae4399615cf3ea94aa"
            },
            {
              "url": "https://git.kernel.org/stable/c/d2367d99f2455f373996d9ddbe833dbe9f942213"
            },
            {
              "url": "https://git.kernel.org/stable/c/da32e78bbb187ed7b137e0007034185570a3a172"
            },
            {
              "url": "https://git.kernel.org/stable/c/13a5f532e3a4fc75c33060a026def1572c208643"
            },
            {
              "url": "https://git.kernel.org/stable/c/7b217960e88b5d2d1e8cdcbcaf3bdf6fe199a0c8"
            },
            {
              "url": "https://git.kernel.org/stable/c/084d23f818321390509e9738a0b08bbf46df6425"
            }
          ],
          "title": "netfilter: ebtables: module names must be null-terminated",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2026-64412",
        "datePublished": "2026-07-25T08:50:52.946Z",
        "dateReserved": "2026-07-19T15:36:31.786Z",
        "dateUpdated": "2026-10-19T20:38:27.704Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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