Common Weakness Enumeration

CWE-476

Allowed

NULL Pointer Dereference

Abstraction: Base · Status: Stable

API response cwe.mitre.org

The product dereferences a pointer that it expects to be valid but is NULL.

6325 vulnerabilities reference this CWE, most recent first.

GHSA-FWFJ-54VH-4R92

Vulnerability from github – Published: 2024-11-07 12:30 – Updated: 2026-05-12 15:30
VLAI
Details

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

scsi: target: core: Fix null-ptr-deref in target_alloc_device()

There is a null-ptr-deref issue reported by KASAN:

BUG: KASAN: null-ptr-deref in target_alloc_device+0xbc4/0xbe0 [target_core_mod] ... kasan_report+0xb9/0xf0 target_alloc_device+0xbc4/0xbe0 [target_core_mod] core_dev_setup_virtual_lun0+0xef/0x1f0 [target_core_mod] target_core_init_configfs+0x205/0x420 [target_core_mod] do_one_initcall+0xdd/0x4e0 ... entry_SYSCALL_64_after_hwframe+0x76/0x7e

In target_alloc_device(), if allocing memory for dev queues fails, then dev will be freed by dev->transport->free_device(), but dev->transport is not initialized at that time, which will lead to a null pointer reference problem.

Fixing this bug by freeing dev with hba->backend->ops->free_device().

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
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{
  "affected": [],
  "aliases": [
    "CVE-2024-50153"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-07T10:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Fix null-ptr-deref in target_alloc_device()\n\nThere is a null-ptr-deref issue reported by KASAN:\n\nBUG: KASAN: null-ptr-deref in target_alloc_device+0xbc4/0xbe0 [target_core_mod]\n...\n kasan_report+0xb9/0xf0\n target_alloc_device+0xbc4/0xbe0 [target_core_mod]\n core_dev_setup_virtual_lun0+0xef/0x1f0 [target_core_mod]\n target_core_init_configfs+0x205/0x420 [target_core_mod]\n do_one_initcall+0xdd/0x4e0\n...\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nIn target_alloc_device(), if allocing memory for dev queues fails, then\ndev will be freed by dev-\u003etransport-\u003efree_device(), but dev-\u003etransport\nis not initialized at that time, which will lead to a null pointer\nreference problem.\n\nFixing this bug by freeing dev with hba-\u003ebackend-\u003eops-\u003efree_device().",
  "id": "GHSA-fwfj-54vh-4r92",
  "modified": "2026-05-12T15:30:40Z",
  "published": "2024-11-07T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50153"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14a6a2adb440e4ae97bee73b2360946bd033dadd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39e02fa90323243187c91bb3e8f2f5f6a9aacfc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/895ab729425ef9bf3b6d2f8d0853abe64896f314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c1e6717f60d31f8af3937c23c4f1498529584e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b80e9bc85bd9af378e7eac83e15dd129557bbdb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fca6caeb4a61d240f031914413fcc69534f6dc03"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.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"
    }
  ]
}

GHSA-FWHJ-785H-43HH

Vulnerability from github – Published: 2026-03-05 20:54 – Updated: 2026-03-05 20:54
VLAI
Summary
OliveTin has crash on NPE by calling APIs with invalid bindings or log references
Details

Summary

An unauthenticated attacker can trigger server-side panics by first creating an execution log entry with a nil binding via StartActionByGet (invalid action ID), then calling KillAction or RestartAction on that tracking ID. This causes a nil-pointer dereference in API handlers and results in repeated per-request panics (Empty reply from server), enabling denial of service through panic/log/CPU amplification.

Details

The issue is caused by this flow:

  1. StartActionByGet accepts arbitrary actionId and still calls executor:

    • service/internal/api/api.go:239

  2. Executor stores a log entry before binding validation:

    • service/internal/executor/executor.go:519

  3. If binding is nil, execution stops, but the log entry remains:

    • service/internal/executor/executor.go:781

  4. KillAction dereferences execReqLogEntry.Binding.Action without checking Binding:

    • service/internal/api/api.go:79

  5. RestartAction has the same unsafe dereference:

    • service/internal/api/api.go:1285

Because the dereference happens before authorization checks in these handlers, this is reachable unauthenticated.

PoC

Environment: - OliveTin default single frontend on http://localhost:1337 - Reproduced on main (commit 235493e) and tag 3000.11.0

1) Create orphan tracking ID with invalid action: ```bash T=$(curl -s -X POST http://localhost:1337/api/StartActionByGet \ -H 'Content-Type: application/json' \ --data '{"actionId":"does-not-exist"}' \ | sed -n 's/."executionTrackingId":"([^"])".*/\1/p') echo "$T"

  1. Trigger panic in RestartAction:

curl -v -X POST http://localhost:1337/api/RestartAction \ -H 'Content-Type: application/json' \ --data "{\"executionTrackingId\":\"$T\"}"

  1. Trigger panic in KillAction:

curl -v -X POST http://localhost:1337/api/KillAction \ -H 'Content-Type: application/json' \ --data "{\"executionTrackingId\":\"$T\"}"

Observed client output:

  • curl: (52) Empty reply from server

Observed server log:

  • panic serving ... runtime error: invalid memory address or nil pointer dereference
  • stack points to:
    • service/internal/api/api.go:79 (KillAction)
    • service/internal/api/api.go:1285 (RestartAction)

```

Impact

This is an unauthenticated denial-of-service vulnerability (panic-based request disruption and log/CPU amplification). An attacker can repeatedly trigger panics remotely without credentials, degrading service reliability and observability.

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/OliveTin/OliveTin"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260304225158-bb14c5da3e64"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-05T20:54:25Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\nAn unauthenticated attacker can trigger server-side panics by first creating an execution log entry with a nil binding via `StartActionByGet` (invalid action ID), then calling `KillAction` or `RestartAction` on that tracking ID. This causes a nil-pointer dereference in API handlers and results in repeated per-request panics (`Empty reply from server`), enabling denial of service through panic/log/CPU amplification.\n\n### Details\nThe issue is caused by this flow:\n\n  1. `StartActionByGet` accepts arbitrary `actionId` and still calls executor:\n     - `service/internal/api/api.go:239`\n\n  2. Executor stores a log entry before binding validation:\n     - `service/internal/executor/executor.go:519`\n\n  3. If binding is nil, execution stops, but the log entry remains:\n     - `service/internal/executor/executor.go:781`\n\n  4. `KillAction` dereferences `execReqLogEntry.Binding.Action` without checking `Binding`:\n     - `service/internal/api/api.go:79`\n\n  5. `RestartAction` has the same unsafe dereference:\n     - `service/internal/api/api.go:1285`\n\nBecause the dereference happens before authorization checks in these handlers, this is reachable unauthenticated.\n\n\n### PoC\n  Environment:\n  - OliveTin default single frontend on `http://localhost:1337`\n  - Reproduced on `main` (commit `235493e`) and tag `3000.11.0`\n\n  1) Create orphan tracking ID with invalid action:\n  ```bash\n  T=$(curl -s -X POST http://localhost:1337/api/StartActionByGet \\\n    -H \u0027Content-Type: application/json\u0027 \\\n    --data \u0027{\"actionId\":\"does-not-exist\"}\u0027 \\\n    | sed -n \u0027s/.*\"executionTrackingId\":\"\\([^\"]*\\)\".*/\\1/p\u0027)\n  echo \"$T\"\n\n  2. Trigger panic in RestartAction:\n\n  curl -v -X POST http://localhost:1337/api/RestartAction \\\n    -H \u0027Content-Type: application/json\u0027 \\\n    --data \"{\\\"executionTrackingId\\\":\\\"$T\\\"}\"\n\n  3. Trigger panic in KillAction:\n\n  curl -v -X POST http://localhost:1337/api/KillAction \\\n    -H \u0027Content-Type: application/json\u0027 \\\n    --data \"{\\\"executionTrackingId\\\":\\\"$T\\\"}\"\n\nObserved client output:\n\n  - curl: (52) Empty reply from server\n\nObserved server log:\n\n  - panic serving ... runtime error: invalid memory address or nil pointer dereference\n  - stack points to:\n      - service/internal/api/api.go:79 (KillAction)\n      - service/internal/api/api.go:1285 (RestartAction)\n\n```\n### Impact\n\nThis is an unauthenticated denial-of-service vulnerability (panic-based request disruption and log/CPU amplification). An attacker can repeatedly trigger panics remotely without credentials, degrading service reliability and observability.",
  "id": "GHSA-fwhj-785h-43hh",
  "modified": "2026-03-05T20:54:25Z",
  "published": "2026-03-05T20:54:25Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OliveTin/OliveTin/security/advisories/GHSA-fwhj-785h-43hh"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OliveTin/OliveTin/commit/bb14c5da3e64b03f207c7f38139eb60e97c278fc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OliveTin/OliveTin"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OliveTin/OliveTin/releases/tag/3000.11.1"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OliveTin has crash on NPE by calling APIs with invalid bindings or log references"
}

GHSA-FWJ8-62R8-8P8M

Vulnerability from github – Published: 2026-05-04 19:38 – Updated: 2026-05-08 21:47
VLAI
Summary
Incus has Nil-Pointer Dereference via S3 Bucket Import
Details

Summary

Missing error handling could lead an authenticated Incus user to cause a daemon crash through the import of a truncated storage bucket backup file.

Details

It was found that TransferManager.UploadAllFiles iterates over tar entries but only checks for io.EOF from tr.Next(). When tr.Next() returns a non-EOF error, such as unexpected EOF from a truncated archive, the header hdr is nil and the code continues to access hdr.Name, causing a nil-pointer dereference that panics the daemon.

This may allow the Incus daemon to be crashed during S3 bucket restore if a truncated or corrupted backup archive is provided. A panic can occur when a malformed archive produces a non-EOF tar read error after the first entry. Any caller of UploadAllFiles that processes attacker-controlled archive content may be affected.

Affected File: https://github.com/lxc/incus/blob/v6.22.0/…server/storage/s3/transfer_manager.go#L127

The tar-iteration loop only checks for EOF:

Affected Code:

for {
    hdr, err := tr.Next()
    if err == io.EOF {
        break // End of archive.
    }

    // Skip index.yaml file
    if hdr.Name == "backup/index.yaml" {

When tr.Next() returns a non-EOF error, hdr is nil. The code does not check for this case and immediately dereferences hdr.Name.

This was confirmed as follows:

Command:

go test ./test/fuzz -run='FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar' -count=1 -v

Output:

=== RUN   FuzzS3BucketUploadTarParsing
=== RUN   FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar
   s3_bucket_upload_fuzz_test.go:82: UploadAllFiles panicked: runtime error: invalid memory address
       or nil pointer dereference
--- FAIL: FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar (0.00s)
FAIL

It is recommended to add a non-EOF error check after tr.Next().

Proposed Fix:

hdr, err := tr.Next()
if err == io.EOF {
    break
}

if err != nil {
    return fmt.Errorf("Error reading backup archive: %w", err)
}

A patch is available at https://github.com/lxc/incus/releases/tag/v7.0.0.

Credits

This issue was discovered and reported by the team at 7asecurity (https://7asecurity.com/)

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/lxc/incus/v6/cmd/incusd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "6.23.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41647"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-04T19:38:48Z",
    "nvd_published_at": "2026-05-07T14:16:03Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nMissing error handling could lead an authenticated Incus user to cause a daemon crash through the import of a truncated storage bucket backup file.\n\n### Details\nIt was found that TransferManager.UploadAllFiles iterates over tar entries but only checks for io.EOF from tr.Next(). When tr.Next() returns a non-EOF error, such as unexpected EOF from a truncated archive, the header hdr is nil and the code continues to access hdr.Name, causing a nil-pointer dereference that panics the daemon.\n\nThis may allow the Incus daemon to be crashed during S3 bucket restore if a truncated or corrupted backup archive is provided. A panic can occur when a malformed archive produces a non-EOF tar read error after the first entry. Any caller of UploadAllFiles that processes attacker-controlled archive content may be affected.\n\nAffected File:\n[https://github.com/lxc/incus/blob/v6.22.0/\u2026server/storage/s3/transfer_manager.go#L127](https://github.com/lxc/incus/blob/v6.22.0/internal/server/storage/s3/transfer_manager.go#L127) \n\nThe tar-iteration loop only checks for EOF:\n\nAffected Code:\n```\nfor {\n    hdr, err := tr.Next()\n    if err == io.EOF {\n        break // End of archive.\n    }\n\n    // Skip index.yaml file\n    if hdr.Name == \"backup/index.yaml\" {\n```\n\nWhen tr.Next() returns a non-EOF error, hdr is nil. The code does not check for this case and immediately dereferences hdr.Name.\n\nThis was confirmed as follows:\n\nCommand:\n```\ngo test ./test/fuzz -run=\u0027FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar\u0027 -count=1 -v\n```\n\nOutput:\n```\n=== RUN   FuzzS3BucketUploadTarParsing\n=== RUN   FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar\n   s3_bucket_upload_fuzz_test.go:82: UploadAllFiles panicked: runtime error: invalid memory address\n       or nil pointer dereference\n--- FAIL: FuzzS3BucketUploadTarParsing/s3_nil_deref_truncated_tar (0.00s)\nFAIL\n```\n\nIt is recommended to add a non-EOF error check after tr.Next().\n\nProposed Fix:\n```\nhdr, err := tr.Next()\nif err == io.EOF {\n    break\n}\n\nif err != nil {\n    return fmt.Errorf(\"Error reading backup archive: %w\", err)\n}\n```\n\nA patch is available at https://github.com/lxc/incus/releases/tag/v7.0.0.\n\n### Credits\nThis issue was discovered and reported by the team at 7asecurity (https://7asecurity.com/)",
  "id": "GHSA-fwj8-62r8-8p8m",
  "modified": "2026-05-08T21:47:04Z",
  "published": "2026-05-04T19:38:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lxc/incus/security/advisories/GHSA-fwj8-62r8-8p8m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41647"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lxc/incus"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lxc/incus/releases/tag/v7.0.0"
    }
  ],
  "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"
    }
  ],
  "summary": "Incus has Nil-Pointer Dereference via S3 Bucket Import"
}

GHSA-FWM3-RX8M-QMV5

Vulnerability from github – Published: 2022-05-14 01:39 – Updated: 2025-04-20 03:31
VLAI
Details

ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2016-9311"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-01-13T16:59:00Z",
    "severity": "HIGH"
  },
  "details": "ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.",
  "id": "GHSA-fwm3-rx8m-qmv5",
  "modified": "2025-04-20T03:31:11Z",
  "published": "2022-05-14T01:39:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9311"
    },
    {
      "type": "WEB",
      "url": "https://bto.bluecoat.com/security-advisory/sa139"
    },
    {
      "type": "WEB",
      "url": "https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbux03706en_us"
    },
    {
      "type": "WEB",
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc"
    },
    {
      "type": "WEB",
      "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03799en_us"
    },
    {
      "type": "WEB",
      "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbux03885en_us"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3707-2"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/633847"
    },
    {
      "type": "WEB",
      "url": "http://nwtime.org/ntp428p9_release"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2017-0252.html"
    },
    {
      "type": "WEB",
      "url": "http://support.ntp.org/bin/view/Main/NtpBug3119"
    },
    {
      "type": "WEB",
      "url": "http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/94444"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1037354"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-FWMH-RV23-RJR3

Vulnerability from github – Published: 2025-08-22 18:31 – Updated: 2026-01-07 18:30
VLAI
Details

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

fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref

fb_add_videomode() can fail with -ENOMEM when its internal kmalloc() cannot allocate a struct fb_modelist. If that happens, the modelist stays empty but the driver continues to register. Add a check for its return value to prevent poteintial null-ptr-deref, which is similar to the commit 17186f1f90d3 ("fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var").

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-2025-38630"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-22T16:15:36Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref\n\nfb_add_videomode() can fail with -ENOMEM when its internal kmalloc() cannot\nallocate a struct fb_modelist.  If that happens, the modelist stays empty but\nthe driver continues to register.  Add a check for its return value to prevent\npoteintial null-ptr-deref, which is similar to the commit 17186f1f90d3 (\"fbdev:\nFix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var\").",
  "id": "GHSA-fwmh-rv23-rjr3",
  "modified": "2026-01-07T18:30:20Z",
  "published": "2025-08-22T18:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38630"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40f0a51f6c54d46a94b9f1180339ede7ca7ee190"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49377bac9e3bec1635065a033c9679214fe7593e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b5d36cc3014986e6fac12eaa8433fe56801d4ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69373502c2b5d364842c702c941d1171e4f35a7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac16154cccda8be10ee3ae188f10a06f3890bc5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cca8f5a3991916729b39d797d01499c335137319"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da11e6a30e0bb8e911288bdc443b3dc8f6a7cac7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f00c29e6755ead56baf2a9c1d3c4c0bb40af3612"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f060441c153495750804133555cf0a211a856892"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.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"
    }
  ]
}

GHSA-FWPW-C8X9-XMMR

Vulnerability from github – Published: 2025-02-27 21:32 – Updated: 2025-03-05 15:30
VLAI
Details

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

mailbox: th1520: Fix a NULL vs IS_ERR() bug

The devm_ioremap() function doesn't return error pointers, it returns NULL. Update the error checking to match.

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-2024-58022"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T20:16:02Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: th1520: Fix a NULL vs IS_ERR() bug\n\nThe devm_ioremap() function doesn\u0027t return error pointers, it returns\nNULL.  Update the error checking to match.",
  "id": "GHSA-fwpw-c8x9-xmmr",
  "modified": "2025-03-05T15:30:51Z",
  "published": "2025-02-27T21:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-58022"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0f98e14c010bcf27898b635a54c1994ac4110a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecbde88e544ff016fa08bbf2156dc431bb123e9b"
    }
  ],
  "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-FWQR-8MV5-J4P7

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 21:31
VLAI
Details

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

ring-buffer: Fix possible dereference of uninitialized pointer

There is a pointer head_page in rb_meta_validate_events() which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure during reader page validation. In this case the control is passed to "invalid" label where the pointer is dereferenced in a loop.

To fix the issue initialize orig_head and head_page before calling rb_validate_buffer.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

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-2026-43272"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix possible dereference of uninitialized pointer\n\nThere is a pointer head_page in rb_meta_validate_events() which is not\ninitialized at the beginning of a function. This pointer can be dereferenced\nif there is a failure during reader page validation. In this case the control\nis passed to \"invalid\" label where the pointer is dereferenced in a loop.\n\nTo fix the issue initialize orig_head and head_page before calling\nrb_validate_buffer.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.",
  "id": "GHSA-fwqr-8mv5-j4p7",
  "modified": "2026-05-08T21:31:21Z",
  "published": "2026-05-06T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43272"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc77986f3cb7476637052edf2d87137fa39f153d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9942396845fef2369478c157b26738fe07142f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1547779402c4cd67755c33616b7203baa88420b"
    }
  ],
  "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-FWRX-6246-JGV9

Vulnerability from github – Published: 2022-05-14 03:15 – Updated: 2025-04-20 03:34
VLAI
Details

The jpc_tsfb_synthesize function in jpc_tsfb.c in JasPer before 1.900.9 allows remote attackers to cause a denial of service (NULL pointer dereference) via vectors involving an empty sequence.

Severity
7.5 (High)
CVSS:3.0/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-2016-10248"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-03-15T14:59:00Z",
    "severity": "HIGH"
  },
  "details": "The jpc_tsfb_synthesize function in jpc_tsfb.c in JasPer before 1.900.9 allows remote attackers to cause a denial of service (NULL pointer dereference) via vectors involving an empty sequence.",
  "id": "GHSA-fwrx-6246-jgv9",
  "modified": "2025-04-20T03:34:06Z",
  "published": "2022-05-14T03:15:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-10248"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mdadams/jasper/commit/2e82fa00466ae525339754bb3ab0a0474a31d4bd"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2017:1208"
    },
    {
      "type": "WEB",
      "url": "https://blogs.gentoo.org/ago/2016/10/20/jasper-null-pointer-dereference-in-jpc_tsfb_synthesize-jpc_tsfb-c"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3693-1"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/93797"
    }
  ],
  "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"
    }
  ]
}

GHSA-FWVX-V57V-GVMW

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-25 21:31
VLAI
Details

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

scsi: csiostor: Fix dereference of null pointer rn

The error exit path when rn is NULL ends up deferencing the null pointer rn via the use of the macro CSIO_INC_STATS. Fix this by adding a new error return path label after the use of the macro to avoid the deference.

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-2026-45857"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:16:57Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: csiostor: Fix dereference of null pointer rn\n\nThe error exit path when rn is NULL ends up deferencing the null pointer rn\nvia the use of the macro CSIO_INC_STATS. Fix this by adding a new error\nreturn path label after the use of the macro to avoid the deference.",
  "id": "GHSA-fwvx-v57v-gvmw",
  "modified": "2026-06-25T21:31:18Z",
  "published": "2026-05-27T15:33:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45857"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16ccbfddcb32365138c806cf572e69b42a193c5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1982257570b84dc33753d536dd969fd357a014e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25ab5e97d3c5f3ed594b4a65d1cc99dc24756681"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25d623f0d77c11a256a54e860d00c239aa9a2583"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bbbab7b6949c76df64210348adbefedaabbf549"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44ef9f81392de885883f73b9f5c43936a82ae9d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/526ea3c0ccd495b0079db3e28fdddd51c1bf01f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6037124dbf675fbd0a6248aaf04cf07387b8c323"
    }
  ],
  "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-FWWC-F8HW-QFWF

Vulnerability from github – Published: 2023-09-09 15:30 – Updated: 2024-04-04 07:34
VLAI
Details

Null pointer dereference when composing from a specially crafted draft message in Mutt >1.5.2 <2.2.12

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

{
  "affected": [],
  "aliases": [
    "CVE-2023-4875"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-475",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-09-09T15:15:35Z",
    "severity": "MODERATE"
  },
  "details": "Null pointer dereference when composing from a specially crafted draft message in Mutt \u003e1.5.2 \u003c2.2.12",
  "id": "GHSA-fwwc-f8hw-qfwf",
  "modified": "2024-04-04T07:34:31Z",
  "published": "2023-09-09T15:30:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4875"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/muttmua/mutt/-/commit/452ee330e094bfc7c9a68555e5152b1826534555.patch"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/muttmua/mutt/-/commit/4cc3128abdf52c615911589394a03271fddeefc6.patch"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00021.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5494"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/09/26/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}
Mitigation MIT-56
Implementation

For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].

Mitigation
Requirements

Select a programming language that is not susceptible to these issues.

Mitigation
Implementation

Check the results of all functions that return a value and verify that the value is non-null before acting upon it.

Mitigation
Architecture and Design

Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.

Mitigation
Implementation

Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.

No CAPEC attack patterns related to this CWE.

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