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.

6310 vulnerabilities reference this CWE, most recent first.

GHSA-W669-772H-5FH5

Vulnerability from github – Published: 2026-02-11 15:30 – Updated: 2026-02-12 15:32
VLAI
Details

A NULL pointer dereference vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.

We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-54147"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-11T13:15:53Z",
    "severity": "LOW"
  },
  "details": "A NULL pointer dereference vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.\n\nWe have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.4 ( 2026/01/20 ) and later",
  "id": "GHSA-w669-772h-5fh5",
  "modified": "2026-02-12T15:32:42Z",
  "published": "2026-02-11T15:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54147"
    },
    {
      "type": "WEB",
      "url": "https://www.qnap.com/en/security-advisory/qsa-26-02"
    }
  ],
  "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:L/SC:N/SI:N/SA:N/E:U/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-W69G-9G23-PFWC

Vulnerability from github – Published: 2024-04-17 12:32 – Updated: 2026-05-12 12:31
VLAI
Details

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

Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security

During our fuzz testing of the connection and disconnection process at the RFCOMM layer, we discovered this bug. By comparing the packets from a normal connection and disconnection process with the testcase that triggered a KASAN report. We analyzed the cause of this bug as follows:

  1. In the packets captured during a normal connection, the host sends a Read Encryption Key Size type of HCI_CMD packet (Command Opcode: 0x1408) to the controller to inquire the length of encryption key.After receiving this packet, the controller immediately replies with a Command Completepacket (Event Code: 0x0e) to return the Encryption Key Size.

  2. In our fuzz test case, the timing of the controller's response to this packet was delayed to an unexpected point: after the RFCOMM and L2CAP layers had disconnected but before the HCI layer had disconnected.

  3. After receiving the Encryption Key Size Response at the time described in point 2, the host still called the rfcomm_check_security function. However, by this time struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn; had already been released, and when the function executed return hci_conn_security(conn->hcon, d->sec_level, auth_type, d->out);, specifically when accessing conn->hcon, a null-ptr-deref error occurred.

To fix this bug, check if sk->sk_state is BT_CLOSED before calling rfcomm_recv_frame in rfcomm_process_rx.

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-2024-26903"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-17T11:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security\n\nDuring our fuzz testing of the connection and disconnection process at the\nRFCOMM layer, we discovered this bug. By comparing the packets from a\nnormal connection and disconnection process with the testcase that\ntriggered a KASAN report. We analyzed the cause of this bug as follows:\n\n1. In the packets captured during a normal connection, the host sends a\n`Read Encryption Key Size` type of `HCI_CMD` packet\n(Command Opcode: 0x1408) to the controller to inquire the length of\nencryption key.After receiving this packet, the controller immediately\nreplies with a Command Completepacket (Event Code: 0x0e) to return the\nEncryption Key Size.\n\n2. In our fuzz test case, the timing of the controller\u0027s response to this\npacket was delayed to an unexpected point: after the RFCOMM and L2CAP\nlayers had disconnected but before the HCI layer had disconnected.\n\n3. After receiving the Encryption Key Size Response at the time described\nin point 2, the host still called the rfcomm_check_security function.\nHowever, by this time `struct l2cap_conn *conn = l2cap_pi(sk)-\u003echan-\u003econn;`\nhad already been released, and when the function executed\n`return hci_conn_security(conn-\u003ehcon, d-\u003esec_level, auth_type, d-\u003eout);`,\nspecifically when accessing `conn-\u003ehcon`, a null-ptr-deref error occurred.\n\nTo fix this bug, check if `sk-\u003esk_state` is BT_CLOSED before calling\nrfcomm_recv_frame in rfcomm_process_rx.",
  "id": "GHSA-w69g-9g23-pfwc",
  "modified": "2026-05-12T12:31:40Z",
  "published": "2024-04-17T12:32:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26903"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2535b848fa0f42ddff3e5255cf5e742c9b77bb26"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/369f419c097e82407dd429a202cde9a73d3ae29b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ead59bafad05f2967ae2438c0528d53244cfde5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/567c0411dc3b424fc7bd1e6109726d7ba32d4f73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f369efd9d963c1f711a06c9b8baf9f5ce616d85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f9fe302dd3a9bbc50f4888464c1773f45166bfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81d7d920a22fd58ef9aedb1bd0a68ee32bd23e96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d1753973f598531baaa2c1033cf7f7b5bb004b0"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.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-W69W-GV35-VQJH

Vulnerability from github – Published: 2024-06-19 15:30 – Updated: 2024-11-07 18:31
VLAI
Details

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

drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference

In cdns_mhdp_atomic_enable(), the return value of drm_mode_duplicate() is assigned to mhdp_state->current_mode, and there is a dereference of it in drm_mode_set_name(), which will lead to a NULL pointer dereference on failure of drm_mode_duplicate().

Fix this bug add a check of mhdp_state->current_mode.

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-2024-38548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-19T14:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: bridge: cdns-mhdp8546: Fix possible null pointer dereference\n\nIn cdns_mhdp_atomic_enable(), the return value of drm_mode_duplicate() is\nassigned to mhdp_state-\u003ecurrent_mode, and there is a dereference of it in\ndrm_mode_set_name(), which will lead to a NULL pointer dereference on\nfailure of drm_mode_duplicate().\n\nFix this bug add a check of mhdp_state-\u003ecurrent_mode.",
  "id": "GHSA-w69w-gv35-vqjh",
  "modified": "2024-11-07T18:31:21Z",
  "published": "2024-06-19T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32fb2ef124c3301656ac6c789a2ef35ef69a66da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47889711da20be9b43e1e136e5cb68df37cbcc79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85d1a27402f81f2e04b0e67d20f749c2a14edbb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89788cd9824c28ffcdea40232c458233353d1896"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/935a92a1c400285545198ca2800a4c6c519c650a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca53b7efd4ba6ae92fd2b3085cb099c745e96965"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dcf53e6103b26e7458be71491d0641f49fbd5840"
    }
  ],
  "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-W6M3-CM65-R2GM

Vulnerability from github – Published: 2024-12-11 00:31 – Updated: 2024-12-11 00:31
VLAI
Details

Substance3D - Modeler versions 1.14.1 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

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-2024-52833"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-10T22:15:18Z",
    "severity": "MODERATE"
  },
  "details": "Substance3D - Modeler versions 1.14.1 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
  "id": "GHSA-w6m3-cm65-r2gm",
  "modified": "2024-12-11T00:31:26Z",
  "published": "2024-12-11T00:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52833"
    },
    {
      "type": "WEB",
      "url": "https://helpx.adobe.com/security/products/substance3d-modeler/apsb24-102.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"
    }
  ]
}

GHSA-W6M5-2248-XH44

Vulnerability from github – Published: 2025-07-03 09:30 – Updated: 2025-11-21 00:30
VLAI
Details

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

net: wwan: t7xx: Fix napi rx poll issue

When driver handles the napi rx polling requests, the netdev might have been released by the dellink logic triggered by the disconnect operation on user plane. However, in the logic of processing skb in polling, an invalid netdev is still being used, which causes a panic.

BUG: kernel NULL pointer dereference, address: 00000000000000f1 Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:dev_gro_receive+0x3a/0x620 [...] Call Trace: ? __die_body+0x68/0xb0 ? page_fault_oops+0x379/0x3e0 ? exc_page_fault+0x4f/0xa0 ? asm_exc_page_fault+0x22/0x30 ? __pfx_t7xx_ccmni_recv_skb+0x10/0x10 [mtk_t7xx (HASH:1400 7)] ? dev_gro_receive+0x3a/0x620 napi_gro_receive+0xad/0x170 t7xx_ccmni_recv_skb+0x48/0x70 [mtk_t7xx (HASH:1400 7)] t7xx_dpmaif_napi_rx_poll+0x590/0x800 [mtk_t7xx (HASH:1400 7)] net_rx_action+0x103/0x470 irq_exit_rcu+0x13a/0x310 sysvec_apic_timer_interrupt+0x56/0x90

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-2025-38123"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:26Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: Fix napi rx poll issue\n\nWhen driver handles the napi rx polling requests, the netdev might\nhave been released by the dellink logic triggered by the disconnect\noperation on user plane. However, in the logic of processing skb in\npolling, an invalid netdev is still being used, which causes a panic.\n\nBUG: kernel NULL pointer dereference, address: 00000000000000f1\nOops: 0000 [#1] PREEMPT SMP NOPTI\nRIP: 0010:dev_gro_receive+0x3a/0x620\n[...]\nCall Trace:\n \u003cIRQ\u003e\n ? __die_body+0x68/0xb0\n ? page_fault_oops+0x379/0x3e0\n ? exc_page_fault+0x4f/0xa0\n ? asm_exc_page_fault+0x22/0x30\n ? __pfx_t7xx_ccmni_recv_skb+0x10/0x10 [mtk_t7xx (HASH:1400 7)]\n ? dev_gro_receive+0x3a/0x620\n napi_gro_receive+0xad/0x170\n t7xx_ccmni_recv_skb+0x48/0x70 [mtk_t7xx (HASH:1400 7)]\n t7xx_dpmaif_napi_rx_poll+0x590/0x800 [mtk_t7xx (HASH:1400 7)]\n net_rx_action+0x103/0x470\n irq_exit_rcu+0x13a/0x310\n sysvec_apic_timer_interrupt+0x56/0x90\n \u003c/IRQ\u003e",
  "id": "GHSA-w6m5-2248-xh44",
  "modified": "2025-11-21T00:30:20Z",
  "published": "2025-07-03T09:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38123"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66542e9430c625f878a5b5dc0fe41e3458d614bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/905fe0845bb27e4eed2ca27ea06e6c4847f1b2b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc89f457d9133a558d4e8ef26dc20843c2d12073"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2df04e69c3f10b412f54be036dd0ed3b14756cf"
    }
  ],
  "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-W6M8-JHPF-WJ94

Vulnerability from github – Published: 2022-05-24 17:44 – Updated: 2022-05-24 17:44
VLAI
Details

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2020-17525"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-17T10:15:00Z",
    "severity": "HIGH"
  },
  "details": "Subversion\u0027s mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7",
  "id": "GHSA-w6m8-jhpf-wj94",
  "modified": "2022-05-24T17:44:42Z",
  "published": "2022-05-24T17:44:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-17525"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://subversion.apache.org/security/CVE-2020-17525-advisory.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-W6PP-7VHG-W878

Vulnerability from github – Published: 2024-04-10 21:30 – Updated: 2025-01-14 15:30
VLAI
Details

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

thermal: Fix NULL pointer dereferences in of_thermal_ functions

of_parse_thermal_zones() parses the thermal-zones node and registers a thermal_zone device for each subnode. However, if a thermal zone is consuming a thermal sensor and that thermal sensor device hasn't probed yet, an attempt to set trip_point_*_temp for that thermal zone device can cause a NULL pointer dereference. Fix it.

console:/sys/class/thermal/thermal_zone87 # echo 120000 > trip_point_0_temp ... Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 ... Call trace: of_thermal_set_trip_temp+0x40/0xc4 trip_point_temp_store+0xc0/0x1dc dev_attr_store+0x38/0x88 sysfs_kf_write+0x64/0xc0 kernfs_fop_write_iter+0x108/0x1d0 vfs_write+0x2f4/0x368 ksys_write+0x7c/0xec __arm64_sys_write+0x20/0x30 el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc do_el0_svc+0x28/0xa0 el0_svc+0x14/0x24 el0_sync_handler+0x88/0xec el0_sync+0x1c0/0x200

While at it, fix the possible NULL pointer dereference in other functions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend().

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-2021-47202"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-10T19:15:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: Fix NULL pointer dereferences in of_thermal_ functions\n\nof_parse_thermal_zones() parses the thermal-zones node and registers a\nthermal_zone device for each subnode. However, if a thermal zone is\nconsuming a thermal sensor and that thermal sensor device hasn\u0027t probed\nyet, an attempt to set trip_point_*_temp for that thermal zone device\ncan cause a NULL pointer dereference. Fix it.\n\n console:/sys/class/thermal/thermal_zone87 # echo 120000 \u003e trip_point_0_temp\n ...\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n ...\n Call trace:\n  of_thermal_set_trip_temp+0x40/0xc4\n  trip_point_temp_store+0xc0/0x1dc\n  dev_attr_store+0x38/0x88\n  sysfs_kf_write+0x64/0xc0\n  kernfs_fop_write_iter+0x108/0x1d0\n  vfs_write+0x2f4/0x368\n  ksys_write+0x7c/0xec\n  __arm64_sys_write+0x20/0x30\n  el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc\n  do_el0_svc+0x28/0xa0\n  el0_svc+0x14/0x24\n  el0_sync_handler+0x88/0xec\n  el0_sync+0x1c0/0x200\n\nWhile at it, fix the possible NULL pointer dereference in other\nfunctions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(),\nof_thermal_get_trend().",
  "id": "GHSA-w6pp-7vhg-w878",
  "modified": "2025-01-14T15:30:48Z",
  "published": "2024-04-10T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47202"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e"
    }
  ],
  "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-W6V4-56GC-2JMG

Vulnerability from github – Published: 2025-04-16 15:34 – Updated: 2025-11-03 21:33
VLAI
Details

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

usbnet:fix NPE during rx_complete

Missing usbnet_going_away Check in Critical Path. The usb_submit_urb function lacks a usbnet_going_away validation, whereas __usbnet_queue_skb includes this check.

This inconsistency creates a race condition where: A URB request may succeed, but the corresponding SKB data fails to be queued.

Subsequent processes: (e.g., rx_complete → defer_bh → __skb_unlink(skb, list)) attempt to access skb->next, triggering a NULL pointer dereference (Kernel Panic).

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

{
  "affected": [],
  "aliases": [
    "CVE-2025-22050"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:15:58Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet:fix NPE during rx_complete\n\nMissing usbnet_going_away Check in Critical Path.\nThe usb_submit_urb function lacks a usbnet_going_away\nvalidation, whereas __usbnet_queue_skb includes this check.\n\nThis inconsistency creates a race condition where:\nA URB request may succeed, but the corresponding SKB data\nfails to be queued.\n\nSubsequent processes:\n(e.g., rx_complete \u2192 defer_bh \u2192 __skb_unlink(skb, list))\nattempt to access skb-\u003enext, triggering a NULL pointer\ndereference (Kernel Panic).",
  "id": "GHSA-w6v4-56gc-2jmg",
  "modified": "2025-11-03T21:33:35Z",
  "published": "2025-04-16T15:34:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22050"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c30988588b28393e3e8873d5654f910e86391ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f10f83acfd619e13c64d6705908dfd792f19544"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51de3600093429e3b712e5f091d767babc5dd6df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95789c2f94fd29dce8759f9766baa333f749287c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acacd48a37b52fc95f621765762c04152b58d642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d689645cd1594ea1d13cb0c404f8ad1011353e0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd9ee3f0d6a53844f65efde581c91bbb0ff749ac"
    },
    {
      "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:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-W6V7-MJP2-PWCF

Vulnerability from github – Published: 2024-02-27 12:31 – Updated: 2024-04-10 21:30
VLAI
Details

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

usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.

ffs_data_clear is indirectly called from both ffs_fs_kill_sb and ffs_ep0_release, so it ends up being called twice when userland closes ep0 and then unmounts f_fs. If userland provided an eventfd along with function's USB descriptors, it ends up calling eventfd_ctx_put as many times, causing a refcount underflow. NULL-ify ffs_eventfd to prevent these extraneous eventfd_ctx_put calls.

Also, set epfiles to NULL right after de-allocating it, for readability.

For completeness, ffs_data_clear actually ends up being called thrice, the last call being before the whole ffs structure gets freed, so when this specific sequence happens there is a second underflow happening (but not being reported):

/sys/kernel/debug/tracing# modprobe usb_f_fs /sys/kernel/debug/tracing# echo ffs_data_clear > set_ftrace_filter /sys/kernel/debug/tracing# echo function > current_tracer /sys/kernel/debug/tracing# echo 1 > tracing_on (setup gadget, run and kill function userland process, teardown gadget) /sys/kernel/debug/tracing# echo 0 > tracing_on /sys/kernel/debug/tracing# cat trace smartcard-openp-436 [000] ..... 1946.208786: ffs_data_clear <-ffs_data_closed smartcard-openp-431 [000] ..... 1946.279147: ffs_data_clear <-ffs_data_closed smartcard-openp-431 [000] .n... 1946.905512: ffs_data_clear <-ffs_data_put

Warning output corresponding to above trace: [ 1946.284139] WARNING: CPU: 0 PID: 431 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15c [ 1946.293094] refcount_t: underflow; use-after-free. [ 1946.298164] Modules linked in: usb_f_ncm(E) u_ether(E) usb_f_fs(E) hci_uart(E) btqca(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) nls_ascii(E) nls_cp437(E) vfat(E) fat(E) bcm2835_v4l2(CE) bcm2835_mmal_vchiq(CE) videobuf2_vmalloc(E) videobuf2_memops(E) sha512_generic(E) videobuf2_v4l2(E) sha512_arm(E) videobuf2_common(E) videodev(E) cpufreq_dt(E) snd_bcm2835(CE) brcmfmac(E) mc(E) vc4(E) ctr(E) brcmutil(E) snd_soc_core(E) snd_pcm_dmaengine(E) drbg(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) drm_kms_helper(E) cec(E) ansi_cprng(E) rc_core(E) syscopyarea(E) raspberrypi_cpufreq(E) sysfillrect(E) sysimgblt(E) cfg80211(E) max17040_battery(OE) raspberrypi_hwmon(E) fb_sys_fops(E) regmap_i2c(E) ecdh_generic(E) rfkill(E) ecc(E) bcm2835_rng(E) rng_core(E) vchiq(CE) leds_gpio(E) libcomposite(E) fuse(E) configfs(E) ip_tables(E) x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E) crc32c_generic(E) sdhci_iproc(E) sdhci_pltfm(E) sdhci(E) [ 1946.399633] CPU: 0 PID: 431 Comm: smartcard-openp Tainted: G C OE 5.15.0-1-rpi #1 Debian 5.15.3-1 [ 1946.417950] Hardware name: BCM2835 [ 1946.425442] Backtrace: [ 1946.432048] [] (dump_backtrace) from [] (show_stack+0x20/0x24) [ 1946.448226] r7:00000009 r6:0000001c r5:c04a948c r4:c0a64e2c [ 1946.458412] [] (show_stack) from [] (dump_stack+0x28/0x30) [ 1946.470380] [] (dump_stack) from [] (__warn+0xe8/0x154) [ 1946.482067] r5:c04a948c r4:c0a71dc8 [ 1946.490184] [] (__warn) from [] (warn_slowpath_fmt+0xa0/0xe4) [ 1946.506758] r7:00000009 r6:0000001c r5:c0a71dc8 r4:c0a71e04 [ 1946.517070] [] (warn_slowpath_fmt) from [] (refcount_warn_saturate+0x110/0x15c) [ 1946.535309] r8:c0100224 r7:c0dfcb84 r6:ffffffff r5:c3b84c00 r4:c24a17c0 [ 1946.546708] [] (refcount_warn_saturate) from [] (eventfd_ctx_put+0x48/0x74) [ 1946.564476] [] (eventfd_ctx_put) from [] (ffs_data_clear+0xd0/0x118 [usb_f_fs]) [ 1946.582664] r5:c3b84c00 r4:c2695b00 [ 1946.590668] [] (ffs_data_clear [usb_f_fs]) from [] (ffs_data_closed+0x9c/0x150 [usb_f_fs]) [ 1946.609608] r5:bf54d014 r4:c2695b00 [ 1946.617522] [] (ffs_data_closed [usb_f_fs]) from [] (ffs_fs_kill_sb+0x2c/0x30 [usb_f_fs]) [ 1946.636217] r7:c0dfcb ---truncated---

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-2021-46933"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T10:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.\n\nffs_data_clear is indirectly called from both ffs_fs_kill_sb and\nffs_ep0_release, so it ends up being called twice when userland closes ep0\nand then unmounts f_fs.\nIf userland provided an eventfd along with function\u0027s USB descriptors, it\nends up calling eventfd_ctx_put as many times, causing a refcount\nunderflow.\nNULL-ify ffs_eventfd to prevent these extraneous eventfd_ctx_put calls.\n\nAlso, set epfiles to NULL right after de-allocating it, for readability.\n\nFor completeness, ffs_data_clear actually ends up being called thrice, the\nlast call being before the whole ffs structure gets freed, so when this\nspecific sequence happens there is a second underflow happening (but not\nbeing reported):\n\n/sys/kernel/debug/tracing# modprobe usb_f_fs\n/sys/kernel/debug/tracing# echo ffs_data_clear \u003e set_ftrace_filter\n/sys/kernel/debug/tracing# echo function \u003e current_tracer\n/sys/kernel/debug/tracing# echo 1 \u003e tracing_on\n(setup gadget, run and kill function userland process, teardown gadget)\n/sys/kernel/debug/tracing# echo 0 \u003e tracing_on\n/sys/kernel/debug/tracing# cat trace\n smartcard-openp-436     [000] .....  1946.208786: ffs_data_clear \u003c-ffs_data_closed\n smartcard-openp-431     [000] .....  1946.279147: ffs_data_clear \u003c-ffs_data_closed\n smartcard-openp-431     [000] .n...  1946.905512: ffs_data_clear \u003c-ffs_data_put\n\nWarning output corresponding to above trace:\n[ 1946.284139] WARNING: CPU: 0 PID: 431 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15c\n[ 1946.293094] refcount_t: underflow; use-after-free.\n[ 1946.298164] Modules linked in: usb_f_ncm(E) u_ether(E) usb_f_fs(E) hci_uart(E) btqca(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) nls_ascii(E) nls_cp437(E) vfat(E) fat(E) bcm2835_v4l2(CE) bcm2835_mmal_vchiq(CE) videobuf2_vmalloc(E) videobuf2_memops(E) sha512_generic(E) videobuf2_v4l2(E) sha512_arm(E) videobuf2_common(E) videodev(E) cpufreq_dt(E) snd_bcm2835(CE) brcmfmac(E) mc(E) vc4(E) ctr(E) brcmutil(E) snd_soc_core(E) snd_pcm_dmaengine(E) drbg(E) snd_pcm(E) snd_timer(E) snd(E) soundcore(E) drm_kms_helper(E) cec(E) ansi_cprng(E) rc_core(E) syscopyarea(E) raspberrypi_cpufreq(E) sysfillrect(E) sysimgblt(E) cfg80211(E) max17040_battery(OE) raspberrypi_hwmon(E) fb_sys_fops(E) regmap_i2c(E) ecdh_generic(E) rfkill(E) ecc(E) bcm2835_rng(E) rng_core(E) vchiq(CE) leds_gpio(E) libcomposite(E) fuse(E) configfs(E) ip_tables(E) x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E) crc32c_generic(E) sdhci_iproc(E) sdhci_pltfm(E) sdhci(E)\n[ 1946.399633] CPU: 0 PID: 431 Comm: smartcard-openp Tainted: G         C OE     5.15.0-1-rpi #1  Debian 5.15.3-1\n[ 1946.417950] Hardware name: BCM2835\n[ 1946.425442] Backtrace:\n[ 1946.432048] [\u003cc08d60a0\u003e] (dump_backtrace) from [\u003cc08d62ec\u003e] (show_stack+0x20/0x24)\n[ 1946.448226]  r7:00000009 r6:0000001c r5:c04a948c r4:c0a64e2c\n[ 1946.458412] [\u003cc08d62cc\u003e] (show_stack) from [\u003cc08d9ae0\u003e] (dump_stack+0x28/0x30)\n[ 1946.470380] [\u003cc08d9ab8\u003e] (dump_stack) from [\u003cc0123500\u003e] (__warn+0xe8/0x154)\n[ 1946.482067]  r5:c04a948c r4:c0a71dc8\n[ 1946.490184] [\u003cc0123418\u003e] (__warn) from [\u003cc08d6948\u003e] (warn_slowpath_fmt+0xa0/0xe4)\n[ 1946.506758]  r7:00000009 r6:0000001c r5:c0a71dc8 r4:c0a71e04\n[ 1946.517070] [\u003cc08d68ac\u003e] (warn_slowpath_fmt) from [\u003cc04a948c\u003e] (refcount_warn_saturate+0x110/0x15c)\n[ 1946.535309]  r8:c0100224 r7:c0dfcb84 r6:ffffffff r5:c3b84c00 r4:c24a17c0\n[ 1946.546708] [\u003cc04a937c\u003e] (refcount_warn_saturate) from [\u003cc0380134\u003e] (eventfd_ctx_put+0x48/0x74)\n[ 1946.564476] [\u003cc03800ec\u003e] (eventfd_ctx_put) from [\u003cbf5464e8\u003e] (ffs_data_clear+0xd0/0x118 [usb_f_fs])\n[ 1946.582664]  r5:c3b84c00 r4:c2695b00\n[ 1946.590668] [\u003cbf546418\u003e] (ffs_data_clear [usb_f_fs]) from [\u003cbf547cc0\u003e] (ffs_data_closed+0x9c/0x150 [usb_f_fs])\n[ 1946.609608]  r5:bf54d014 r4:c2695b00\n[ 1946.617522] [\u003cbf547c24\u003e] (ffs_data_closed [usb_f_fs]) from [\u003cbf547da0\u003e] (ffs_fs_kill_sb+0x2c/0x30 [usb_f_fs])\n[ 1946.636217]  r7:c0dfcb\n---truncated---",
  "id": "GHSA-w6v7-mjp2-pwcf",
  "modified": "2024-04-10T21:30:28Z",
  "published": "2024-02-27T12:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46933"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c4ace3e6b8575745c50dca9e76e0021e697d645"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/240fc586e83d645912accce081a48aa63a45f6ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33f6a0cbb7772146e1c11f38028fffbfed14728b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52500239e3f2d6fc77b6f58632a9fb98fe74ac09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1e0887379422975f237d43d8839b751a6bcf154"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc8c8028c21b2a3842a1e98e99e55028df275919"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebef2aa29f370b5096c16020c104e393192ef684"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f976dd7011150244a7ba820f2c331e9fb253befa"
    }
  ],
  "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-W6V8-RQ8J-HXQP

Vulnerability from github – Published: 2022-05-13 01:15 – Updated: 2024-10-17 21:31
VLAI
Details

The Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly initialize memory and consequently uses a NULL pointer in an unspecified function call, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvSetConsoleLocalEUDC Vulnerability."

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

{
  "affected": [],
  "aliases": [
    "CVE-2011-1282"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2011-07-13T23:55:00Z",
    "severity": "HIGH"
  },
  "details": "The Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly initialize memory and consequently uses a NULL pointer in an unspecified function call, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka \"CSRSS Local EOP SrvSetConsoleLocalEUDC Vulnerability.\"",
  "id": "GHSA-w6v8-rq8j-hxqp",
  "modified": "2024-10-17T21:31:28Z",
  "published": "2022-05-13T01:15:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1282"
    },
    {
      "type": "WEB",
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-056"
    },
    {
      "type": "WEB",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12402"
    },
    {
      "type": "WEB",
      "url": "http://www.us-cert.gov/cas/techalerts/TA11-193A.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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