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.

6769 vulnerabilities reference this CWE, most recent first.

GHSA-5QX2-HPG2-XVGJ

Vulnerability from github – Published: 2025-10-03 21:30 – Updated: 2025-10-08 21:30
VLAI
Details

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack.

We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 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:N/VA:L/SC:N/SI:N/SA:N
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{
  "affected": [],
  "aliases": [
    "CVE-2025-52427"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-03T19:15:45Z",
    "severity": "MODERATE"
  },
  "details": "A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator 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 versions:\nQTS 5.2.6.3195 build 20250715 and later\nQuTS hero h5.2.6.3195 build 20250715 and later",
  "id": "GHSA-5qx2-hpg2-xvgj",
  "modified": "2025-10-08T21:30:24Z",
  "published": "2025-10-03T21:30:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52427"
    },
    {
      "type": "WEB",
      "url": "https://www.qnap.com/en/security-advisory/qsa-25-36"
    }
  ],
  "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:N/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-5QX5-JPR4-RW99

Vulnerability from github – Published: 2025-08-22 18:31 – Updated: 2025-11-26 00:30
VLAI
Details

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

Revert "drm/gem-framebuffer: Use dma_buf from GEM object instance"

This reverts commit cce16fcd7446dcff7480cd9d2b6417075ed81065.

The dma_buf field in struct drm_gem_object is not stable over the object instance's lifetime. The field becomes NULL when user space releases the final GEM handle on the buffer object. This resulted in a NULL-pointer deref.

Workarounds in commit 5307dce878d4 ("drm/gem: Acquire references on GEM handles for framebuffers") and commit f6bfc9afc751 ("drm/framebuffer: Acquire internal references on GEM handles") only solved the problem partially. They especially don't work for buffer objects without a DRM framebuffer associated.

Hence, this revert to going back to using .import_attach->dmabuf.

v3: - cc stable

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-2025-38673"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-22T16:15:42Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"drm/gem-framebuffer: Use dma_buf from GEM object instance\"\n\nThis reverts commit cce16fcd7446dcff7480cd9d2b6417075ed81065.\n\nThe dma_buf field in struct drm_gem_object is not stable over the\nobject instance\u0027s lifetime. The field becomes NULL when user space\nreleases the final GEM handle on the buffer object. This resulted\nin a NULL-pointer deref.\n\nWorkarounds in commit 5307dce878d4 (\"drm/gem: Acquire references on\nGEM handles for framebuffers\") and commit f6bfc9afc751 (\"drm/framebuffer:\nAcquire internal references on GEM handles\") only solved the problem\npartially. They especially don\u0027t work for buffer objects without a DRM\nframebuffer associated.\n\nHence, this revert to going back to using .import_attach-\u003edmabuf.\n\nv3:\n- cc stable",
  "id": "GHSA-5qx5-jpr4-rw99",
  "modified": "2025-11-26T00:30:15Z",
  "published": "2025-08-22T18:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38673"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2712ca878b688682ac2ce02aefc413fc76019cd9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e31f5a1c2cd38bf977736cdfa79444e19d4005ec"
    }
  ],
  "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-5R3H-V82J-R7RR

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-07-02 21:32
VLAI
Details

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

ipv6: Fix a potential NPD in cleanup_prefix_route()

addrconf_get_prefix_route() can return the fib6_null_entry sentinel entry which has a NULL fib6_table pointer. Therefore, before setting the route's expiration time, check that we are not working with this entry, as otherwise a NPD will be triggered [1].

Note that the other callers of addrconf_get_prefix_route() are not susceptible to this bug:

  1. addrconf_prefix_rcv(): Requests a route with the 'RTF_ADDRCONF | RTF_PREFIX_RT' flags which are not set on fib6_null_entry.

  2. modify_prefix_route(): Fixed by commit a747e02430df ("ipv6: avoid possible NULL deref in modify_prefix_route()").

  3. __ipv6_ifa_notify(): Calls ip6_del_rt() which specifically checks for fib6_null_entry and returns an error.

[1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [...] Call Trace: __kasan_check_byte (mm/kasan/common.c:573) lock_acquire.part.0 (kernel/locking/lockdep.c:5842 (discriminator 1)) _raw_spin_lock_bh (kernel/locking/spinlock.c:182 (discriminator 1)) cleanup_prefix_route (net/ipv6/addrconf.c:1280) ipv6_del_addr (net/ipv6/addrconf.c:1342) inet6_addr_del.isra.0 (net/ipv6/addrconf.c:3119) inet6_rtm_deladdr (net/ipv6/addrconf.c:4812) rtnetlink_rcv_msg (net/core/rtnetlink.c:6997) netlink_rcv_skb (net/netlink/af_netlink.c:2555) netlink_unicast (net/netlink/af_netlink.c:1344) netlink_sendmsg (net/netlink/af_netlink.c:1899) __sock_sendmsg (net/socket.c:802 (discriminator 4)) _syssendmsg (net/socket.c:2698) _sys_sendmsg (net/socket.c:2752) __sys_sendmsg (net/socket.c:2784) do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)

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-2026-53214"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:39Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix a potential NPD in cleanup_prefix_route()\n\naddrconf_get_prefix_route() can return the fib6_null_entry sentinel\nentry which has a NULL fib6_table pointer. Therefore, before setting the\nroute\u0027s expiration time, check that we are not working with this entry,\nas otherwise a NPD will be triggered [1].\n\nNote that the other callers of addrconf_get_prefix_route() are not\nsusceptible to this bug:\n\n1. addrconf_prefix_rcv(): Requests a route with the \u0027RTF_ADDRCONF |\n   RTF_PREFIX_RT\u0027 flags which are not set on fib6_null_entry.\n\n2. modify_prefix_route(): Fixed by commit a747e02430df (\"ipv6: avoid\n   possible NULL deref in modify_prefix_route()\").\n\n3. __ipv6_ifa_notify(): Calls ip6_del_rt() which specifically checks for\n   fib6_null_entry and returns an error.\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\n[...]\nCall Trace:\n\u003cTASK\u003e\n__kasan_check_byte (mm/kasan/common.c:573)\nlock_acquire.part.0 (kernel/locking/lockdep.c:5842 (discriminator 1))\n_raw_spin_lock_bh (kernel/locking/spinlock.c:182 (discriminator 1))\ncleanup_prefix_route (net/ipv6/addrconf.c:1280)\nipv6_del_addr (net/ipv6/addrconf.c:1342)\ninet6_addr_del.isra.0 (net/ipv6/addrconf.c:3119)\ninet6_rtm_deladdr (net/ipv6/addrconf.c:4812)\nrtnetlink_rcv_msg (net/core/rtnetlink.c:6997)\nnetlink_rcv_skb (net/netlink/af_netlink.c:2555)\nnetlink_unicast (net/netlink/af_netlink.c:1344)\nnetlink_sendmsg (net/netlink/af_netlink.c:1899)\n__sock_sendmsg (net/socket.c:802 (discriminator 4))\n____sys_sendmsg (net/socket.c:2698)\n___sys_sendmsg (net/socket.c:2752)\n__sys_sendmsg (net/socket.c:2784)\ndo_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)",
  "id": "GHSA-5r3h-v82j-r7rr",
  "modified": "2026-07-02T21:32:05Z",
  "published": "2026-06-25T09:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53214"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07d9a0870a178843cea44cfd58c27445dc94cf5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/192df376a05c2db15564640f9da7e20907c1fa24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f82b02b4059ddc06e4fcfd057bfb59fd6885cd2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/653a2849305708f75260b5296f17b2a759ff9cc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b70c687b7cf267fb08586667a3946c8851cad672"
    }
  ],
  "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-5R4M-496R-7WQM

Vulnerability from github – Published: 2023-01-17 18:30 – Updated: 2025-04-07 18:30
VLAI
Details

A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to crash the system or leak internal kernel information.

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

{
  "affected": [],
  "aliases": [
    "CVE-2022-41858"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-17T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to crash the system or leak internal kernel information.",
  "id": "GHSA-5r4m-496r-7wqm",
  "modified": "2025-04-07T18:30:34Z",
  "published": "2023-01-17T18:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41858"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/ec4eb8a86ade4d22633e1da2a7d85a846b7d1798"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230223-0006"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5R68-RPXC-F6CW

Vulnerability from github – Published: 2026-05-01 15:30 – Updated: 2026-07-04 12:30
VLAI
Details

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

usb: cdns3: gadget: fix NULL pointer dereference in ep_queue

When the gadget endpoint is disabled or not yet configured, the ep->desc pointer can be NULL. This leads to a NULL pointer dereference when __cdns3_gadget_ep_queue() is called, causing a kernel crash.

Add a check to return -ESHUTDOWN if ep->desc is NULL, which is the standard return code for unconfigured endpoints.

This prevents potential crashes when ep_queue is called on endpoints that are not ready.

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-2026-31755"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-01T15:16:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: gadget: fix NULL pointer dereference in ep_queue\n\nWhen the gadget endpoint is disabled or not yet configured, the ep-\u003edesc\npointer can be NULL. This leads to a NULL pointer dereference when\n__cdns3_gadget_ep_queue() is called, causing a kernel crash.\n\nAdd a check to return -ESHUTDOWN if ep-\u003edesc is NULL, which is the\nstandard return code for unconfigured endpoints.\n\nThis prevents potential crashes when ep_queue is called on endpoints\nthat are not ready.",
  "id": "GHSA-5r68-rpxc-f6cw",
  "modified": "2026-07-04T12:30:27Z",
  "published": "2026-05-01T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31755"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6"
    }
  ],
  "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-5RCG-JQ54-2R8G

Vulnerability from github – Published: 2023-11-14 21:31 – Updated: 2023-11-14 21:31
VLAI
Details

NULL pointer dereference in some Intel(R) Arc(TM) & Iris(R) Xe Graphics - WHQL - Windows Drviers before version 31.0.101.4255 may allow authenticated user to potentially enable denial of service via local access.

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

{
  "affected": [],
  "aliases": [
    "CVE-2023-25071"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-395",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-11-14T19:15:18Z",
    "severity": "MODERATE"
  },
  "details": "NULL pointer dereference in some Intel(R) Arc(TM) \u0026 Iris(R) Xe Graphics - WHQL - Windows Drviers before version 31.0.101.4255 may allow authenticated user to potentially enable denial of service via local access.",
  "id": "GHSA-5rcg-jq54-2r8g",
  "modified": "2023-11-14T21:31:01Z",
  "published": "2023-11-14T21:31:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25071"
    },
    {
      "type": "WEB",
      "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00864.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5RCP-34MV-5HF3

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-14 18:31
VLAI
Details

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

f2fs: fix null-ptr-deref in f2fs_get_dnode_of_data

There is issue as follows when test f2fs atomic write: F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc_offset: 0 F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix. F2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix. ================================================================== BUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0 Read of size 8 at addr 0000000000000028 by task rep/1990

CPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 #266 Call Trace: dump_stack_lvl+0x6e/0x91 print_report.cold+0x49a/0x6bb kasan_report+0xa8/0x130 f2fs_get_dnode_of_data+0xac/0x16d0 f2fs_do_write_data_page+0x2a5/0x1030 move_data_page+0x3c5/0xdf0 do_garbage_collect+0x2015/0x36c0 f2fs_gc+0x554/0x1d30 f2fs_balance_fs+0x7f5/0xda0 f2fs_write_single_data_page+0xb66/0xdc0 f2fs_write_cache_pages+0x716/0x1420 f2fs_write_data_pages+0x84f/0x9a0 do_writepages+0x130/0x3a0 filemap_fdatawrite_wbc+0x87/0xa0 file_write_and_wait_range+0x157/0x1c0 f2fs_do_sync_file+0x206/0x12d0 f2fs_sync_file+0x99/0xc0 vfs_fsync_range+0x75/0x140 f2fs_file_write_iter+0xd7b/0x1850 vfs_write+0x645/0x780 ksys_write+0xf1/0x1e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd

As 3db1de0e582c commit changed atomic write way which new a cow_inode for atomic write file, and also mark cow_inode as FI_ATOMIC_FILE. When f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode which is NULL. Then will trigger null-ptr-deref. To solve above issue, introduce FI_COW_FILE flag for COW inode.

Fiexes: 3db1de0e582c("f2fs: change the current atomic write way")

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-2022-50009"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix null-ptr-deref in f2fs_get_dnode_of_data\n\nThere is issue as follows when test f2fs atomic write:\nF2FS-fs (loop0): Can\u0027t find valid F2FS filesystem in 2th superblock\nF2FS-fs (loop0): invalid crc_offset: 0\nF2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix.\nF2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix.\n==================================================================\nBUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0\nRead of size 8 at addr 0000000000000028 by task rep/1990\n\nCPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 #266\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x6e/0x91\n print_report.cold+0x49a/0x6bb\n kasan_report+0xa8/0x130\n f2fs_get_dnode_of_data+0xac/0x16d0\n f2fs_do_write_data_page+0x2a5/0x1030\n move_data_page+0x3c5/0xdf0\n do_garbage_collect+0x2015/0x36c0\n f2fs_gc+0x554/0x1d30\n f2fs_balance_fs+0x7f5/0xda0\n f2fs_write_single_data_page+0xb66/0xdc0\n f2fs_write_cache_pages+0x716/0x1420\n f2fs_write_data_pages+0x84f/0x9a0\n do_writepages+0x130/0x3a0\n filemap_fdatawrite_wbc+0x87/0xa0\n file_write_and_wait_range+0x157/0x1c0\n f2fs_do_sync_file+0x206/0x12d0\n f2fs_sync_file+0x99/0xc0\n vfs_fsync_range+0x75/0x140\n f2fs_file_write_iter+0xd7b/0x1850\n vfs_write+0x645/0x780\n ksys_write+0xf1/0x1e0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAs 3db1de0e582c commit changed atomic write way which new a cow_inode for\natomic write file, and also mark cow_inode as FI_ATOMIC_FILE.\nWhen f2fs_do_write_data_page write cow_inode will use cow_inode\u0027s cow_inode\nwhich is NULL. Then will trigger null-ptr-deref.\nTo solve above issue, introduce FI_COW_FILE flag for COW inode.\n\nFiexes: 3db1de0e582c(\"f2fs: change the current atomic write way\")",
  "id": "GHSA-5rcp-34mv-5hf3",
  "modified": "2025-11-14T18:31:25Z",
  "published": "2025-06-18T12:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50009"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f63e33eca6fa29a11c76fa31db5fe1cada5ad6e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a2c5b7994960fac29cf8a3f4e62855bae1b27d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7000ad53ec1b17bd2fac76984b7b0c663755cbb7"
    }
  ],
  "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-5RHR-4PF4-XG2Q

Vulnerability from github – Published: 2025-04-14 21:32 – Updated: 2025-04-14 21:32
VLAI
Details

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

USB: host: isp116x: check return value after calling platform_get_resource()

It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.

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-2022-49302"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: host: isp116x: check return value after calling platform_get_resource()\n\nIt will cause null-ptr-deref if platform_get_resource() returns NULL,\nwe need check the return value.",
  "id": "GHSA-5rhr-4pf4-xg2q",
  "modified": "2025-04-14T21:32:21Z",
  "published": "2025-04-14T21:32:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49302"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/134a3408c2d3f7e23eb0e4556e0a2d9f36c2614e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3592cfd8b848bf0c4d7740d78a87a7b8f6e1fa9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3825db88d8c704e7992b685618a03f82bffcf2ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bffda1560a6f255fdf504e059fbbdb5d46b9e44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/804de302ada3544699c5f48c5314b249af76faa3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82a101f14943f479fd190b1e5b40d91c77e2ac1b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aca0cab0e9ed33b6371aafb519a6c38f2850ffc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c91a74b1f0f2d2d7e728742ae55e3ffe9ba7853d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee105039d3653444de4d3ede642383c92855dc1e"
    }
  ],
  "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-5RMC-H6XF-RX3W

Vulnerability from github – Published: 2022-05-14 03:19 – Updated: 2022-05-14 03:19
VLAI
Details

Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.

Severity
5.5 (Medium)
CVSS:3.0/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-2018-11591"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-05-31T16:29:00Z",
    "severity": "MODERATE"
  },
  "details": "Espruino before 1.98 allows attackers to cause a denial of service (application crash) with a user crafted input file via a NULL pointer dereference during syntax parsing. This was addressed by adding validation for a debug trace print statement in jsvar.c.",
  "id": "GHSA-5rmc-h6xf-rx3w",
  "modified": "2022-05-14T03:19:56Z",
  "published": "2022-05-14T03:19:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11591"
    },
    {
      "type": "WEB",
      "url": "https://github.com/espruino/Espruino/issues/1420"
    },
    {
      "type": "WEB",
      "url": "https://github.com/espruino/Espruino/commit/b6d362f6a1f2de0b3e7604848116efb509196bf4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/espruino/Espruino/files/2015612/test.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-5RP3-9FRH-M3WX

Vulnerability from github – Published: 2022-05-24 19:03 – Updated: 2022-05-24 19:03
VLAI
Details

A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.

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

{
  "affected": [],
  "aliases": [
    "CVE-2021-3543"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-01T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.",
  "id": "GHSA-5rp3-9frh-m3wx",
  "modified": "2022-05-24T19:03:43Z",
  "published": "2022-05-24T19:03:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3543"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/lkml/20210429165941.27020-1-andraprs@amazon.com"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/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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