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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.

6617 vulnerabilities reference this CWE, most recent first.

GHSA-2GP8-XHXH-8H9C

Vulnerability from github – Published: 2025-04-18 15:31 – Updated: 2025-11-03 21:33
VLAI
Details

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

remoteproc: core: Clear table_sz when rproc_shutdown

There is case as below could trigger kernel dump: Use U-Boot to start remote processor(rproc) with resource table published to a fixed address by rproc. After Kernel boots up, stop the rproc, load a new firmware which doesn't have resource table ,and start rproc.

When starting rproc with a firmware not have resource table, memcpy(loaded_table, rproc->cached_table, rproc->table_sz) will trigger dump, because rproc->cache_table is set to NULL during the last stop operation, but rproc->table_sz is still valid.

This issue is found on i.MX8MP and i.MX9.

Dump as below: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000010af63000 [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 2 UID: 0 PID: 1060 Comm: sh Not tainted 6.14.0-rc7-next-20250317-dirty #38 Hardware name: NXP i.MX8MPlus EVK board (DT) pstate: a0000005 (NzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __pi_memcpy_generic+0x110/0x22c lr : rproc_start+0x88/0x1e0 Call trace: __pi_memcpy_generic+0x110/0x22c (P) rproc_boot+0x198/0x57c state_store+0x40/0x104 dev_attr_store+0x18/0x2c sysfs_kf_write+0x7c/0x94 kernfs_fop_write_iter+0x120/0x1cc vfs_write+0x240/0x378 ksys_write+0x70/0x108 __arm64_sys_write+0x1c/0x28 invoke_syscall+0x48/0x10c el0_svc_common.constprop.0+0xc0/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x30/0xcc el0t_64_sync_handler+0x10c/0x138 el0t_64_sync+0x198/0x19c

Clear rproc->table_sz to address the issue.

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-2025-38152"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-18T07:15:43Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nremoteproc: core: Clear table_sz when rproc_shutdown\n\nThere is case as below could trigger kernel dump:\nUse U-Boot to start remote processor(rproc) with resource table\npublished to a fixed address by rproc. After Kernel boots up,\nstop the rproc, load a new firmware which doesn\u0027t have resource table\n,and start rproc.\n\nWhen starting rproc with a firmware not have resource table,\n`memcpy(loaded_table, rproc-\u003ecached_table, rproc-\u003etable_sz)` will\ntrigger dump, because rproc-\u003ecache_table is set to NULL during the last\nstop operation, but rproc-\u003etable_sz is still valid.\n\nThis issue is found on i.MX8MP and i.MX9.\n\nDump as below:\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000000\nMem abort info:\n  ESR = 0x0000000096000004\n  EC = 0x25: DABT (current EL), IL = 32 bits\n  SET = 0, FnV = 0\n  EA = 0, S1PTW = 0\n  FSC = 0x04: level 0 translation fault\nData abort info:\n  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n  CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\nuser pgtable: 4k pages, 48-bit VAs, pgdp=000000010af63000\n[0000000000000000] pgd=0000000000000000, p4d=0000000000000000\nInternal error: Oops: 0000000096000004 [#1] PREEMPT SMP\nModules linked in:\nCPU: 2 UID: 0 PID: 1060 Comm: sh Not tainted 6.14.0-rc7-next-20250317-dirty #38\nHardware name: NXP i.MX8MPlus EVK board (DT)\npstate: a0000005 (NzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : __pi_memcpy_generic+0x110/0x22c\nlr : rproc_start+0x88/0x1e0\nCall trace:\n __pi_memcpy_generic+0x110/0x22c (P)\n rproc_boot+0x198/0x57c\n state_store+0x40/0x104\n dev_attr_store+0x18/0x2c\n sysfs_kf_write+0x7c/0x94\n kernfs_fop_write_iter+0x120/0x1cc\n vfs_write+0x240/0x378\n ksys_write+0x70/0x108\n __arm64_sys_write+0x1c/0x28\n invoke_syscall+0x48/0x10c\n el0_svc_common.constprop.0+0xc0/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x30/0xcc\n el0t_64_sync_handler+0x10c/0x138\n el0t_64_sync+0x198/0x19c\n\nClear rproc-\u003etable_sz to address the issue.",
  "id": "GHSA-2gp8-xhxh-8h9c",
  "modified": "2025-11-03T21:33:40Z",
  "published": "2025-04-18T15:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38152"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/068f6648ff5b0c7adeb6c363fae7fb188aa178fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2df19f5f6f72da6f6ebab7cdb3a3b9f7686bb476"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e66bca8cd51ebedd5d32426906a38e4a3c69c5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c6bb82a6f3da6ab2d3fbea03901482231708b98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e0fd2a3b9852ac3cf540edb06ccc0153b38b5af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6015ca453b82ec54aec9682dcc38773948fcc48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efdde3d73ab25cef4ff2d06783b0aad8b093c0e4"
    },
    {
      "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"
    }
  ]
}

GHSA-2GPQ-MC93-WWWP

Vulnerability from github – Published: 2025-01-19 12:31 – Updated: 2026-05-12 15:30
VLAI
Details

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

sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy

As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons:

  • Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns.

  • current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2).

The 'net' structure can be obtained from the table->data using container_of().

Note that table->data could also be used directly, as this is the only member needed from the 'net' structure, but that would increase the size of this fix, to use '*data' everywhere 'net->sctp.sctp_hmac_alg' is used.

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-2025-21640"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-19T11:15:09Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: sysctl: cookie_hmac_alg: avoid using current-\u003ensproxy\n\nAs mentioned in a previous commit of this series, using the \u0027net\u0027\nstructure via \u0027current\u0027 is not recommended for different reasons:\n\n- Inconsistency: getting info from the reader\u0027s/writer\u0027s netns vs only\n  from the opener\u0027s netns.\n\n- current-\u003ensproxy can be NULL in some cases, resulting in an \u0027Oops\u0027\n  (null-ptr-deref), e.g. when the current task is exiting, as spotted by\n  syzbot [1] using acct(2).\n\nThe \u0027net\u0027 structure can be obtained from the table-\u003edata using\ncontainer_of().\n\nNote that table-\u003edata could also be used directly, as this is the only\nmember needed from the \u0027net\u0027 structure, but that would increase the size\nof this fix, to use \u0027*data\u0027 everywhere \u0027net-\u003esctp.sctp_hmac_alg\u0027 is\nused.",
  "id": "GHSA-2gpq-mc93-wwwp",
  "modified": "2026-05-12T15:30:43Z",
  "published": "2025-01-19T12:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21640"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03ca51faba2b017bf6c90e139434c4117d0afcdc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1031462a944ba0fa83c25ab1111465f8345b5589"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cd0659deb9c03535fd61839e91d4d4d3e51ac71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5599b212d2f4466e1832a94e9932684aaa364587"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86ddf8118123cb58a0fb8724cad6979c4069065b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad673e514b2793b8d5902f6ba6ab7e890dea23d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea62dd1383913b5999f3d16ae99d411f41b528d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0bb3935470684306e4e04793a20ac4c4b08de0b"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/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-2GQH-HPCC-JMX2

Vulnerability from github – Published: 2022-05-19 00:00 – Updated: 2022-05-27 00:01
VLAI
Details

There is a Null Pointer Dereference vulnerability in the XFAScanner::scanNode() function in XFAScanner.cc in xpdf 4.03.

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

{
  "affected": [],
  "aliases": [
    "CVE-2021-27548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-05-18T15:15:00Z",
    "severity": "MODERATE"
  },
  "details": "There is a Null Pointer Dereference vulnerability in the XFAScanner::scanNode() function in XFAScanner.cc in xpdf 4.03.",
  "id": "GHSA-2gqh-hpcc-jmx2",
  "modified": "2022-05-27T00:01:28Z",
  "published": "2022-05-19T00:00:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27548"
    },
    {
      "type": "WEB",
      "url": "https://forum.xpdfreader.com/viewtopic.php?f=3\u0026t=42115"
    }
  ],
  "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"
    }
  ]
}

GHSA-2H43-P8W8-3PQ4

Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2023-05-05 21:31
VLAI
Details

An issue was discovered in gpac through 20200801. A NULL pointer dereference exists in the function nhmldump_send_header located in write_nhml.c. It allows an attacker to cause Denial of Service.

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

{
  "affected": [],
  "aliases": [
    "CVE-2020-23930"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-21T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in gpac through 20200801. A NULL pointer dereference exists in the function nhmldump_send_header located in write_nhml.c. It allows an attacker to cause Denial of Service.",
  "id": "GHSA-2h43-p8w8-3pq4",
  "modified": "2023-05-05T21:31:08Z",
  "published": "2022-05-24T17:48:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-23930"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gpac/gpac/issues/1565"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349"
    }
  ],
  "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"
    }
  ]
}

GHSA-2H74-XCWF-23J7

Vulnerability from github – Published: 2022-05-24 19:15 – Updated: 2022-05-24 19:15
VLAI
Details

An issue was discovered in gravity through 0.8.1. A NULL pointer dereference exists in the function list_iterator_next() located in gravity_core.c. It allows an attacker to cause Denial of Service.

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2021-32285"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-09-20T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in gravity through 0.8.1. A NULL pointer dereference exists in the function list_iterator_next() located in gravity_core.c. It allows an attacker to cause Denial of Service.",
  "id": "GHSA-2h74-xcwf-23j7",
  "modified": "2022-05-24T19:15:13Z",
  "published": "2022-05-24T19:15:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32285"
    },
    {
      "type": "WEB",
      "url": "https://github.com/marcobambini/gravity/issues/319"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-2H84-JHPC-6PX2

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2025-11-03 21:31
VLAI
Details

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

drm/amd/display: Add NULL check for clk_mgr in dcn32_init_hw

This commit addresses a potential null pointer dereference issue in the dcn32_init_hw function. The issue could occur when dc->clk_mgr is null.

The fix adds a check to ensure dc->clk_mgr is not null before accessing its functions. This prevents a potential null pointer dereference.

Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn32/dcn32_hwseq.c:961 dcn32_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 782)

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-2024-49915"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:13Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add NULL check for clk_mgr in dcn32_init_hw\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn32_init_hw` function. The issue could occur when `dc-\u003eclk_mgr` is\nnull.\n\nThe fix adds a check to ensure `dc-\u003eclk_mgr` is not null before\naccessing its functions. This prevents a potential null pointer\ndereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn32/dcn32_hwseq.c:961 dcn32_init_hw() error: we previously assumed \u0027dc-\u003eclk_mgr\u0027 could be null (see line 782)",
  "id": "GHSA-2h84-jhpc-6px2",
  "modified": "2025-11-03T21:31:22Z",
  "published": "2024-10-21T18:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49915"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d94d9cbd9fec7344d230c4f7b781826f7799c60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d1854c86d02cea8f8a0c0ca05f4ab14292baf3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c395fd47d1565bd67671f45cca281b3acc2c31ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0454b3cb0584a6bf275aeb49be61a760fd546a2"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.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-2H85-GG66-HCCV

Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2025-09-23 12:31
VLAI
Details

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to launch a denial-of-service (DoS) attack.

We have already fixed the vulnerability in the following versions: QTS 5.2.1.2930 build 20241025 and later QuTS hero h5.2.1.2929 build 20241025 and later

Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-37045"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-22T16:15:23Z",
    "severity": "MODERATE"
  },
  "details": "A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to launch a denial-of-service (DoS) attack.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.1.2930 build 20241025 and later\nQuTS hero h5.2.1.2929 build 20241025 and later",
  "id": "GHSA-2h85-gg66-hccv",
  "modified": "2025-09-23T12:31:11Z",
  "published": "2024-11-22T21:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37045"
    },
    {
      "type": "WEB",
      "url": "https://www.qnap.com/en/security-advisory/qsa-24-43"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-2H8H-H9VG-9CR4

Vulnerability from github – Published: 2022-05-17 01:17 – Updated: 2025-04-20 03:43
VLAI
Details

The LoadString function in helper.h in libgig 4.0.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted gig file.

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

{
  "affected": [],
  "aliases": [
    "CVE-2017-12952"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-08-28T19:29:00Z",
    "severity": "MODERATE"
  },
  "details": "The LoadString function in helper.h in libgig 4.0.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted gig file.",
  "id": "GHSA-2h8h-h9vg-9cr4",
  "modified": "2025-04-20T03:43:57Z",
  "published": "2022-05-17T01:17:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-12952"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/42546"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2017/Aug/39"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2HC4-QJJ9-7P6R

Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-05-24 17:49
VLAI
Details

CODESYS Gateway 3 before 3.5.17.0 has a NULL pointer dereference that may result in 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-2021-29241"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-05-03T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "CODESYS Gateway 3 before 3.5.17.0 has a NULL pointer dereference that may result in a denial of service (DoS).",
  "id": "GHSA-2hc4-qjj9-7p6r",
  "modified": "2022-05-24T17:49:24Z",
  "published": "2022-05-24T17:49:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29241"
    },
    {
      "type": "WEB",
      "url": "https://customers.codesys.com/index.php"
    },
    {
      "type": "WEB",
      "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=14637\u0026token=8dbd75ae7553ae3be25e22f741db783b31e14799\u0026download="
    },
    {
      "type": "WEB",
      "url": "https://www.codesys.com/security/security-reports.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-2HFG-4M2J-678G

Vulnerability from github – Published: 2024-12-28 12:30 – Updated: 2025-11-03 21:32
VLAI
Details

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

media: wl128x: Fix atomicity violation in fmc_send_cmd()

Atomicity violation occurs when the fmc_send_cmd() function is executed simultaneously with the modification of the fmdev->resp_skb value. Consider a scenario where, after passing the validity check within the function, a non-null fmdev->resp_skb variable is assigned a null value. This results in an invalid fmdev->resp_skb variable passing the validity check. As seen in the later part of the function, skb = fmdev->resp_skb; when the invalid fmdev->resp_skb passes the check, a null pointer dereference error may occur at line 478, evt_hdr = (void *)skb->data;

To address this issue, it is recommended to include the validity check of fmdev->resp_skb within the locked section of the function. This modification ensures that the value of fmdev->resp_skb does not change during the validation process, thereby maintaining its validity.

This possible bug is found by an experimental static analysis tool developed by our team. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations.

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-2024-56700"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-28T10:15:17Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: wl128x: Fix atomicity violation in fmc_send_cmd()\n\nAtomicity violation occurs when the fmc_send_cmd() function is executed\nsimultaneously with the modification of the fmdev-\u003eresp_skb value.\nConsider a scenario where, after passing the validity check within the\nfunction, a non-null fmdev-\u003eresp_skb variable is assigned a null value.\nThis results in an invalid fmdev-\u003eresp_skb variable passing the validity\ncheck. As seen in the later part of the function, skb = fmdev-\u003eresp_skb;\nwhen the invalid fmdev-\u003eresp_skb passes the check, a null pointer\ndereference error may occur at line 478, evt_hdr = (void *)skb-\u003edata;\n\nTo address this issue, it is recommended to include the validity check of\nfmdev-\u003eresp_skb within the locked section of the function. This\nmodification ensures that the value of fmdev-\u003eresp_skb does not change\nduring the validation process, thereby maintaining its validity.\n\nThis possible bug is found by an experimental static analysis tool\ndeveloped by our team. This tool analyzes the locking APIs\nto extract function pairs that can be concurrently executed, and then\nanalyzes the instructions in the paired functions to identify possible\nconcurrency bugs including data races and atomicity violations.",
  "id": "GHSA-2hfg-4m2j-678g",
  "modified": "2025-11-03T21:32:01Z",
  "published": "2024-12-28T12:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56700"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e63c908de357048180516b84740ed62dac0b269"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/372dc9509122e5d45d4c12978e31c3c7d00aaca4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/378ce4e08ca2b1ac7bbf1d57b68643ca4226c5f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c818ad07e964bca3d27adac1e1f50e1e3c9180e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80a3b2ee01eecf22dfa06968b3cde92c691dea10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca59f9956d4519ab18ab2270be47c6b8c6ced091"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d16109c9fdc1b8cea4fe63b42e06e926c3f68990"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7408a052aa1b4f6fb6f1c7a8877b84017a07ac9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed228b74d8a500380150965d5becabf9a1e33141"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/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"
    }
  ]
}
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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