Common Weakness Enumeration

CWE-674

Allowed-with-Review

Uncontrolled Recursion

Abstraction: Class · Status: Draft

API response cwe.mitre.org

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

615 vulnerabilities reference this CWE, most recent first.

GHSA-P6XC-XR62-6R2G

Vulnerability from github – Published: 2021-12-18 18:00 – Updated: 2026-06-09 10:26
VLAI
Summary
Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion
Details

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0 and 2.12.3.

Affected packages

Only the org.apache.logging.log4j:log4j-core package is directly affected by this vulnerability. The org.apache.logging.log4j:log4j-api should be kept at the same version as the org.apache.logging.log4j:log4j-core package to ensure compatability if in use.

Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.logging.log4j:log4j-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.4.0"
            },
            {
              "fixed": "2.12.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.logging.log4j:log4j-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.13.0"
            },
            {
              "fixed": "2.17.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.logging.log4j:log4j-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.ops4j.pax.logging:pax-logging-log4j2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.8.0"
            },
            {
              "fixed": "1.9.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.ops4j.pax.logging:pax-logging-log4j2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.10.0"
            },
            {
              "fixed": "1.10.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.ops4j.pax.logging:pax-logging-log4j2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.11.0"
            },
            {
              "fixed": "1.11.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.ops4j.pax.logging:pax-logging-log4j2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-45105"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-12-18T17:59:37Z",
    "nvd_published_at": "2021-12-18T12:15:00Z",
    "severity": "HIGH"
  },
  "details": "Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0 and 2.12.3.\n\n\n# Affected packages\nOnly the `org.apache.logging.log4j:log4j-core` package is directly affected by this vulnerability. The `org.apache.logging.log4j:log4j-api` should be kept at the same version as the `org.apache.logging.log4j:log4j-core` package to ensure compatability if in use.",
  "id": "GHSA-p6xc-xr62-6r2g",
  "modified": "2026-06-09T10:26:50Z",
  "published": "2021-12-18T18:00:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45105"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1541"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/930724"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5024"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20211218-0001"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd"
    },
    {
      "type": "WEB",
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032"
    },
    {
      "type": "WEB",
      "url": "https://logging.apache.org/log4j/2.x/security.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SIG7FZULMNK2XF6FZRU4VWYDQXNMUGAJ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EOKPQGV24RRBBI4TBZUDQMM4MEH7MXCY"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/12/19/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Log4j2 vulnerable to Improper Input Validation and Uncontrolled Recursion"
}

GHSA-P744-6F8Q-9X8H

Vulnerability from github – Published: 2023-06-05 21:30 – Updated: 2024-04-04 04:32
VLAI
Details

Telefnica Brasil Vivo Play (IPTV) Firmware: 2023.04.04.01.06.15 is vulnerable to Denial of Service (DoS) via DNS Recursion.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2023-31893"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-06-05T21:15:10Z",
    "severity": "HIGH"
  },
  "details": "Telefnica Brasil Vivo Play (IPTV) Firmware: 2023.04.04.01.06.15 is vulnerable to Denial of Service (DoS) via DNS Recursion.",
  "id": "GHSA-p744-6f8q-9x8h",
  "modified": "2024-04-04T04:32:18Z",
  "published": "2023-06-05T21:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31893"
    },
    {
      "type": "WEB",
      "url": "https://medium.com/%40shooterRX/dns-recursion-leads-to-dos-attack-vivo-play-iptv-cve-2023-31893-b5ac45f38f"
    },
    {
      "type": "WEB",
      "url": "https://medium.com/@shooterRX/dns-recursion-leads-to-dos-attack-vivo-play-iptv-cve-2023-31893-b5ac45f38f"
    },
    {
      "type": "WEB",
      "url": "https://www.cert.br/docs/whitepapers/dns-recursivo-aberto"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-P8P6-RCP6-4MRM

Vulnerability from github – Published: 2022-02-10 20:23 – Updated: 2021-04-22 16:54
VLAI
Summary
Uncontrolled Recursion in Play Framework
Details

In Play Framework 2.6.0 through 2.8.2, stack consumption can occur because of unbounded recursion during parsing of crafted JSON documents.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.play:play"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.0"
            },
            {
              "fixed": "2.7.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.play:play"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.8.0"
            },
            {
              "fixed": "2.8.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.play:play-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.0"
            },
            {
              "fixed": "2.7.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.typesafe.play:play-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.8.0"
            },
            {
              "fixed": "2.8.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26883"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-22T16:54:42Z",
    "nvd_published_at": "2020-11-06T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "In Play Framework 2.6.0 through 2.8.2, stack consumption can occur because of unbounded recursion during parsing of crafted JSON documents.",
  "id": "GHSA-p8p6-rcp6-4mrm",
  "modified": "2021-04-22T16:54:42Z",
  "published": "2022-02-10T20:23:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26883"
    },
    {
      "type": "WEB",
      "url": "https://github.com/playframework/playframework/pull/10495"
    },
    {
      "type": "WEB",
      "url": "https://www.playframework.com/security/vulnerability/CVE-2020-26883-JsonParseUncontrolledRecursion"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Uncontrolled Recursion in Play Framework"
}

GHSA-P9J8-PXCR-CQ49

Vulnerability from github – Published: 2025-07-10 09:32 – Updated: 2025-11-18 15:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel: Check dsbr size from EFI variable

Since the size of struct btintel_dsbr is already known, we can just start there instead of querying the EFI variable size. If the final result doesn't match what we expect also fail. This fixes a stack buffer overflow when the EFI variable is larger than struct btintel_dsbr.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-38315"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T08:15:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel: Check dsbr size from EFI variable\n\nSince the size of struct btintel_dsbr is already known, we can just\nstart there instead of querying the EFI variable size. If the final\nresult doesn\u0027t match what we expect also fail. This fixes a stack buffer\noverflow when the EFI variable is larger than struct btintel_dsbr.",
  "id": "GHSA-p9j8-pxcr-cq49",
  "modified": "2025-11-18T15:30:40Z",
  "published": "2025-07-10T09:32:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38315"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3aa1dc3c9060e335e82e9c182bf3d1db29220b1b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b8526bb489780ccc0caffc446ecabec83cfe568"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9427f6081f37c795a8bd29d0ee72a4da3bd64af8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PHW4-GV7F-MC27

Vulnerability from github – Published: 2024-01-03 09:30 – Updated: 2025-11-04 00:30
VLAI
Details

GVCP dissector crash in Wireshark 4.2.0, 4.0.0 to 4.0.11, and 3.6.0 to 3.6.19 allows denial of service via packet injection or crafted capture file

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-0208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-230",
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-01-03T08:15:10Z",
    "severity": "HIGH"
  },
  "details": "GVCP dissector crash in Wireshark 4.2.0, 4.0.0 to 4.0.11, and 3.6.0 to 3.6.19 allows denial of service via packet injection or crafted capture file",
  "id": "GHSA-phw4-gv7f-mc27",
  "modified": "2025-11-04T00:30:42Z",
  "published": "2024-01-03T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0208"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/19496"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00016.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/34DBP5P2RHQ7XUABPANYYMOGV5KS6VEP"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MADSCHKZSCKQ5NLIX3UMOIJD2JZ65L4V"
    },
    {
      "type": "WEB",
      "url": "https://www.wireshark.org/security/wnpa-sec-2024-01.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PJ93-8V65-P9W3

Vulnerability from github – Published: 2022-05-24 17:27 – Updated: 2022-05-24 17:27
VLAI
Details

url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2020-25219"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674",
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-09-09T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.",
  "id": "GHSA-pj93-8v65-p9w3",
  "modified": "2022-05-24T17:27:42Z",
  "published": "2022-05-24T17:27:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25219"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libproxy/libproxy/issues/134"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00012.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNID6EZVOVH7EZB7KFU2EON54CFDIVUR"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JF5JSONJNO64ARWRVOS6K6HSIPHEF3H2"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SSVZAAVHBJR3Z4MZNR55QW3OQFAS2STH"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4514-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4800"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PJGQ-63X6-GP3W

Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2024-04-04 02:01
VLAI
Details

Foxit Reader 9.6.0.25114 and earlier has two unique RecursiveCall bugs involving 3 functions exhausting available stack memory because of Uncontrolled Recursion in the V8 JavaScript engine (issue 1 of 2).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2019-13123"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-09-30T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "Foxit Reader 9.6.0.25114 and earlier has two unique RecursiveCall bugs involving 3 functions exhausting available stack memory because of Uncontrolled Recursion in the V8 JavaScript engine (issue 1 of 2).",
  "id": "GHSA-pjgq-63x6-gp3w",
  "modified": "2024-04-04T02:01:52Z",
  "published": "2022-05-24T16:57:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13123"
    },
    {
      "type": "WEB",
      "url": "https://www.foxitsoftware.com/support/security-bulletins.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PMCG-F5M4-2GWP

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-06-01 18:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

l2tp: Drop large packets with UDP encap

syzbot reported a WARN on my patch series 1. The actual issue is an overflow of 16-bit UDP length field, and it exists in the upstream code. My series added a debug WARN with an overflow check that exposed the issue, that's why syzbot tripped on my patches, rather than on upstream code.

syzbot's repro:

r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$inet6(r1, &(0x7f00000000c0)={0xa, 0x0, 0x0, @loopback, 0xfffffffc}, 0x1c) connect$pppl2tp(r0, &(0x7f0000000240)=@pppol2tpin6={0x18, 0x1, {0x0, r1, 0x4, 0x0, 0x0, 0x0, {0xa, 0x4e22, 0xffff, @ipv4={'\x00', '\xff\xff', @empty}}}}, 0x32) writev(r0, &(0x7f0000000080)=[{&(0x7f0000000000)="ee", 0x34000}], 0x1)

It basically sends an oversized (0x34000 bytes) PPPoL2TP packet with UDP encapsulation, and l2tp_xmit_core doesn't check for overflows when it assigns the UDP length field. The value gets trimmed to 16 bites.

Add an overflow check that drops oversized packets and avoids sending packets with trimmed UDP length to the wire.

syzbot's stack trace (with my patch applied):

len >= 65536u WARNING: ./include/linux/udp.h:38 at udp_set_len_short include/linux/udp.h:38 [inline], CPU#1: syz.0.17/5957 WARNING: ./include/linux/udp.h:38 at l2tp_xmit_core net/l2tp/l2tp_core.c:1293 [inline], CPU#1: syz.0.17/5957 WARNING: ./include/linux/udp.h:38 at l2tp_xmit_skb+0x1204/0x18d0 net/l2tp/l2tp_core.c:1327, CPU#1: syz.0.17/5957 Modules linked in: CPU: 1 UID: 0 PID: 5957 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:udp_set_len_short include/linux/udp.h:38 [inline] RIP: 0010:l2tp_xmit_core net/l2tp/l2tp_core.c:1293 [inline] RIP: 0010:l2tp_xmit_skb+0x1204/0x18d0 net/l2tp/l2tp_core.c:1327 Code: 0f 0b 90 e9 21 f9 ff ff e8 e9 05 ec f6 90 0f 0b 90 e9 8d f9 ff ff e8 db 05 ec f6 90 0f 0b 90 e9 cc f9 ff ff e8 cd 05 ec f6 90 <0f> 0b 90 e9 de fa ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 4f RSP: 0018:ffffc90003d67878 EFLAGS: 00010293 RAX: ffffffff8ad985e3 RBX: ffff8881a6400090 RCX: ffff8881697f0000 RDX: 0000000000000000 RSI: 0000000000034010 RDI: 000000000000ffff RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520007acf00 R12: ffff8881baf20900 R13: 0000000000034010 R14: ffff8881a640008e R15: ffff8881760f7000 FS: 000055557e81f500(0000) GS:ffff8882a9467000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000033000 CR3: 00000001612f4000 CR4: 00000000000006f0 Call Trace: pppol2tp_sendmsg+0x40a/0x5f0 net/l2tp/l2tp_ppp.c:302 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] sock_write_iter+0x503/0x550 net/socket.c:1195 do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1 vfs_writev+0x33c/0x990 fs/read_write.c:1059 do_writev+0x154/0x2e0 fs/read_write.c:1105 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f636479c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffffd4241c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f6364a15fa0 RCX: 00007f636479c629 RDX: 0000000000000001 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007f6364832b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6364a15fac R14: 00007f6364a15fa0 R15: 00007f6364a15fa0

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-43080"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T10:16:21Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nl2tp: Drop large packets with UDP encap\n\nsyzbot reported a WARN on my patch series [1]. The actual issue is an\noverflow of 16-bit UDP length field, and it exists in the upstream code.\nMy series added a debug WARN with an overflow check that exposed the\nissue, that\u0027s why syzbot tripped on my patches, rather than on upstream\ncode.\n\nsyzbot\u0027s repro:\n\nr0 = socket$pppl2tp(0x18, 0x1, 0x1)\nr1 = socket$inet6_udp(0xa, 0x2, 0x0)\nconnect$inet6(r1, \u0026(0x7f00000000c0)={0xa, 0x0, 0x0, @loopback, 0xfffffffc}, 0x1c)\nconnect$pppl2tp(r0, \u0026(0x7f0000000240)=@pppol2tpin6={0x18, 0x1, {0x0, r1, 0x4, 0x0, 0x0, 0x0, {0xa, 0x4e22, 0xffff, @ipv4={\u0027\\x00\u0027, \u0027\\xff\\xff\u0027, @empty}}}}, 0x32)\nwritev(r0, \u0026(0x7f0000000080)=[{\u0026(0x7f0000000000)=\"ee\", 0x34000}], 0x1)\n\nIt basically sends an oversized (0x34000 bytes) PPPoL2TP packet with UDP\nencapsulation, and l2tp_xmit_core doesn\u0027t check for overflows when it\nassigns the UDP length field. The value gets trimmed to 16 bites.\n\nAdd an overflow check that drops oversized packets and avoids sending\npackets with trimmed UDP length to the wire.\n\nsyzbot\u0027s stack trace (with my patch applied):\n\nlen \u003e= 65536u\nWARNING: ./include/linux/udp.h:38 at udp_set_len_short include/linux/udp.h:38 [inline], CPU#1: syz.0.17/5957\nWARNING: ./include/linux/udp.h:38 at l2tp_xmit_core net/l2tp/l2tp_core.c:1293 [inline], CPU#1: syz.0.17/5957\nWARNING: ./include/linux/udp.h:38 at l2tp_xmit_skb+0x1204/0x18d0 net/l2tp/l2tp_core.c:1327, CPU#1: syz.0.17/5957\nModules linked in:\nCPU: 1 UID: 0 PID: 5957 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\nRIP: 0010:udp_set_len_short include/linux/udp.h:38 [inline]\nRIP: 0010:l2tp_xmit_core net/l2tp/l2tp_core.c:1293 [inline]\nRIP: 0010:l2tp_xmit_skb+0x1204/0x18d0 net/l2tp/l2tp_core.c:1327\nCode: 0f 0b 90 e9 21 f9 ff ff e8 e9 05 ec f6 90 0f 0b 90 e9 8d f9 ff ff e8 db 05 ec f6 90 0f 0b 90 e9 cc f9 ff ff e8 cd 05 ec f6 90 \u003c0f\u003e 0b 90 e9 de fa ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 4f\nRSP: 0018:ffffc90003d67878 EFLAGS: 00010293\nRAX: ffffffff8ad985e3 RBX: ffff8881a6400090 RCX: ffff8881697f0000\nRDX: 0000000000000000 RSI: 0000000000034010 RDI: 000000000000ffff\nRBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004\nR10: dffffc0000000000 R11: fffff520007acf00 R12: ffff8881baf20900\nR13: 0000000000034010 R14: ffff8881a640008e R15: ffff8881760f7000\nFS:  000055557e81f500(0000) GS:ffff8882a9467000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000200000033000 CR3: 00000001612f4000 CR4: 00000000000006f0\nCall Trace:\n \u003cTASK\u003e\n pppol2tp_sendmsg+0x40a/0x5f0 net/l2tp/l2tp_ppp.c:302\n sock_sendmsg_nosec net/socket.c:727 [inline]\n __sock_sendmsg net/socket.c:742 [inline]\n sock_write_iter+0x503/0x550 net/socket.c:1195\n do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1\n vfs_writev+0x33c/0x990 fs/read_write.c:1059\n do_writev+0x154/0x2e0 fs/read_write.c:1105\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f636479c629\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffffd4241c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\nRAX: ffffffffffffffda RBX: 00007f6364a15fa0 RCX: 00007f636479c629\nRDX: 0000000000000001 RSI: 0000200000000080 RDI: 0000000000000003\nRBP: 00007f6364832b39 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007f6364a15fac R14: 00007f6364a15fa0 R15: 00007f6364a15fa0\n \u003c/TASK\u003e\n\n[1]: https://lore.kernel.org/all/20260226201600.222044-1-alice.kernel@fastmail.im/",
  "id": "GHSA-pmcg-f5m4-2gwp",
  "modified": "2026-06-01T18:31:29Z",
  "published": "2026-05-06T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43080"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02d787fd0922c71c0264449fe82d35983613e4e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77c1489398c85a844f90205f5e76fd6bc8bb4089"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86534c97abd6365a9a021fd767a2023e63c44469"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ccce02d501335f59a02f26c878c5e095b16302f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a42452db035577e150ffd9adf98c56fef9fb9408"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2994fd24997ed63d713c03313f863645adb4d6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebe560ea5f54134279356703e73b7f867c89db13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f295fe86e22ff0a2ecebf05e30a387e5cf6f6ddc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PPC9-VW33-PG6G

Vulnerability from github – Published: 2025-08-04 18:30 – Updated: 2025-08-04 21:30
VLAI
Details

An issue in the pdfseparate utility of freedesktop poppler v25.04.0 allows attackers to cause an infinite recursion via supplying a crafted PDF file. This can lead to a Denial of Service (DoS).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-50420"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-04T17:15:30Z",
    "severity": "HIGH"
  },
  "details": "An issue in the pdfseparate utility of freedesktop poppler v25.04.0 allows attackers to cause an infinite recursion via supplying a crafted PDF file. This can lead to a Denial of Service (DoS).",
  "id": "GHSA-ppc9-vw33-pg6g",
  "modified": "2025-08-04T21:30:42Z",
  "published": "2025-08-04T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-50420"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Landw-hub/CVE-2025-50420"
    },
    {
      "type": "WEB",
      "url": "http://freedesktop.com"
    },
    {
      "type": "WEB",
      "url": "http://poppler.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PQ2G-WX69-C263

Vulnerability from github – Published: 2025-02-06 06:31 – Updated: 2025-03-12 14:28
VLAI
Summary
Netplex Json-smart Uncontrolled Recursion vulnerability
Details

A security issue was found in Netplex Json-smart 2.5.0 through 2.5.1. When loading a specially crafted JSON input, containing a large number of ’{’, a stack exhaustion can be trigger, which could allow an attacker to cause a Denial of Service (DoS). This issue exists because of an incomplete fix for CVE-2023-1370.

The fixed version only addresses the default modes provided by JSONParser, such as MODE_RFC4627. If you create the JSONParser manually or with custom options, make sure to set the LIMIT_JSON_DEPTH option.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "net.minidev:json-smart"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.5.0"
            },
            {
              "fixed": "2.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-57699"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-02-06T19:01:17Z",
    "nvd_published_at": "2025-02-05T22:15:33Z",
    "severity": "HIGH"
  },
  "details": "A security issue was found in Netplex Json-smart 2.5.0 through 2.5.1. When loading a specially crafted JSON input, containing a large number of \u2019{\u2019, a stack exhaustion can be trigger, which could allow an attacker to cause a Denial of Service (DoS). This issue exists because of an incomplete fix for CVE-2023-1370.\n\nThe fixed version only addresses the default modes provided by [JSONParser](https://github.com/netplex/json-smart-v2/blob/master/json-smart/src/main/java/net/minidev/json/parser/JSONParser.java#L118), such as `MODE_RFC4627`. If you create the JSONParser manually or with custom options, make sure to set the `LIMIT_JSON_DEPTH` option.",
  "id": "GHSA-pq2g-wx69-c263",
  "modified": "2025-03-12T14:28:04Z",
  "published": "2025-02-06T06:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57699"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netplex/json-smart-v2/issues/232"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netplex/json-smart-v2/issues/233"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netplex/json-smart-v2/issues/236"
    },
    {
      "type": "WEB",
      "url": "https://github.com/TurtleLiu/Vul_PoC/tree/main/CVE-2024-57699"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/netplex/json-smart-v2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netplex/json-smart-v2/releases/tag/2.5.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2023-1370"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Netplex Json-smart Uncontrolled Recursion vulnerability"
}
Mitigation
Implementation

Ensure that an end condition will be reached under all logic conditions. The end condition may include checking against the depth of recursion and exiting with an error if the recursion goes too deep. The complexity of the end condition contributes to the effectiveness of this action.

Mitigation
Implementation

Increase the stack size.

CAPEC-230: Serialized Data with Nested Payloads

Applications often need to transform data in and out of a data format (e.g., XML and YAML) by using a parser. It may be possible for an adversary to inject data that may have an adverse effect on the parser when it is being processed. Many data format languages allow the definition of macro-like structures that can be used to simplify the creation of complex structures. By nesting these structures, causing the data to be repeatedly substituted, an adversary can cause the parser to consume more resources while processing, causing excessive memory consumption and CPU utilization.

CAPEC-231: Oversized Serialized Data Payloads

An adversary injects oversized serialized data payloads into a parser during data processing to produce adverse effects upon the parser such as exhausting system resources and arbitrary code execution.

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