CWE-476

{
  "affected": [],
  "aliases": [
    "CVE-2026-34874"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-01T19:16:33Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.",
  "id": "GHSA-5jpv-5p2x-4fwv",
  "modified": "2026-04-01T21:30:30Z",
  "published": "2026-04-01T21:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34874"
    },
    {
      "type": "WEB",
      "url": "https://mbed-tls.readthedocs.io/en/latest/security-advisories"
    },
    {
      "type": "WEB",
      "url": "https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-null-pointer-dereference-x509"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2022-47024"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-20T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "A null pointer dereference issue was discovered in function gui_x11_create_blank_mouse in gui_x11.c in vim 8.1.2269 thru 9.0.0339 allows attackers to cause denial of service or other unspecified impacts.",
  "id": "GHSA-5jpw-hxh6-542f",
  "modified": "2025-04-03T18:30:36Z",
  "published": "2023-01-20T21:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47024"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vim/vim/commit/a63ad78ed31e36dbdf3a9cd28071dcdbefce7d19"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4EX6N2DB75A73MQGVW3CS4VTNPAYVM2M"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZWIJBSQX53P7DHV77KRXJIXA4GH7XHC"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EX6N2DB75A73MQGVW3CS4VTNPAYVM2M"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PZWIJBSQX53P7DHV77KRXJIXA4GH7XHC"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202305-16"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2017-14626"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-09-21T05:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "ImageMagick 7.0.7-0 Q16 has a NULL Pointer Dereference vulnerability in the function sixel_decode in coders/sixel.c.",
  "id": "GHSA-5jqg-cpjj-3gwx",
  "modified": "2025-04-20T03:45:37Z",
  "published": "2022-05-13T01:17:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14626"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ImageMagick/ImageMagick/issues/720"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ImageMagick/ImageMagick/issues/721"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/05/msg00015.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3681-1"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/100943"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-24832"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-05-18T22:15:09Z",
    "severity": "HIGH"
  },
  "details": "A null pointer dereference bug in Hermes prior to commit 5cae9f72975cf0e5a62b27fdd8b01f103e198708 could have been used by an attacker to crash an Hermes runtime where the EnableHermesInternal config option was set to true. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.",
  "id": "GHSA-5jqp-fwpp-hvwv",
  "modified": "2024-04-04T04:14:46Z",
  "published": "2023-05-19T00:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-24832"
    },
    {
      "type": "WEB",
      "url": "https://github.com/facebook/hermes/commit/5cae9f72975cf0e5a62b27fdd8b01f103e198708"
    },
    {
      "type": "WEB",
      "url": "https://www.facebook.com/security/advisories/cve-2023-24832"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2017-14181"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-09-07T16:29:00Z",
    "severity": "HIGH"
  },
  "details": "DeleteBitBuffer in libbitbuf/bitbuffer.c in mp4tools aacplusenc 0.17.5 allows remote attackers to cause a denial of service (invalid memory write, SEGV on unknown address 0x000000000030, and application crash) or possibly have unspecified other impact via a crafted .wav file, aka a NULL pointer dereference.",
  "id": "GHSA-5jqw-6wf2-9j7g",
  "modified": "2025-04-20T03:44:28Z",
  "published": "2022-05-17T01:06:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14181"
    },
    {
      "type": "WEB",
      "url": "https://github.com/teknoraver/aacplusenc/issues/1"
    },
    {
      "type": "WEB",
      "url": "https://blogs.gentoo.org/ago/2017/09/07/aacplusenc-null-pointer-dereference-in-deletebitbuffer-bitbuffer-c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2014-7826"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-11-10T11:55:00Z",
    "severity": "HIGH"
  },
  "details": "kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.",
  "id": "GHSA-5jvp-w9hf-v844",
  "modified": "2022-05-13T01:23:24Z",
  "published": "2022-05-13T01:23:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-7826"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1161565"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/98556"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=086ba77a6db00ed858ff07451bedee197df868c9"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2014-1943.html"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2015-0290.html"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2015-0864.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2014/11/06/11"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/70971"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-47681"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T12:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: fix NULL pointer dereference in mt7996_mcu_sta_bfer_he\n\nFix the NULL pointer dereference in mt7996_mcu_sta_bfer_he\nroutine adding an sta interface to the mt7996 driver.\n\nFound by code review.",
  "id": "GHSA-5jvv-5359-4v99",
  "modified": "2024-10-22T18:32:09Z",
  "published": "2024-10-21T12:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47681"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/174c803b432596cdd7dd3ec5e0ec52b561969ee2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1afdde3b5f56217d875a543cf565075c11bbddad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e4b60ae8a047ad2fb175fcfdd54feee80983a45"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f503ae90c7355e8506e68498fe84c1357894cd5b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-21939"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-01T16:15:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/hmm: Don\u0027t dereference struct page pointers without notifier lock\n\nThe pnfs that we obtain from hmm_range_fault() point to pages that\nwe don\u0027t have a reference on, and the guarantee that they are still\nin the cpu page-tables is that the notifier lock must be held and the\nnotifier seqno is still valid.\n\nSo while building the sg table and marking the pages accesses / dirty\nwe need to hold this lock with a validated seqno.\n\nHowever, the lock is reclaim tainted which makes\nsg_alloc_table_from_pages_segment() unusable, since it internally\nallocates memory.\n\nInstead build the sg-table manually. For the non-iommu case\nthis might lead to fewer coalesces, but if that\u0027s a problem it can\nbe fixed up later in the resource cursor code. For the iommu case,\nthe whole sg-table may still be coalesced to a single contigous\ndevice va region.\n\nThis avoids marking pages that we don\u0027t own dirty and accessed, and\nit also avoid dereferencing struct pages that we don\u0027t own.\n\nv2:\n- Use assert to check whether hmm pfns are valid (Matthew Auld)\n- Take into account that large pages may cross range boundaries\n  (Matthew Auld)\n\nv3:\n- Don\u0027t unnecessarily check for a non-freed sg-table. (Matthew Auld)\n- Add a missing up_read() in an error path. (Matthew Auld)\n\n(cherry picked from commit ea3e66d280ce2576664a862693d1da8fd324c317)",
  "id": "GHSA-5jw6-g45h-9h97",
  "modified": "2025-10-30T21:30:40Z",
  "published": "2025-04-01T18:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21939"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a98219bcc961edd3388960576e4353e123b4a51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a24c98f0e4cc994334598d4f3a851972064809d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9326f529da7298a95643c3267f1c0fdb0db55eb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-39856"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-19T16:15:44Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: ti: am65-cpsw-nuss: Fix null pointer dereference for ndev\n\nIn the TX completion packet stage of TI SoCs with CPSW2G instance, which\nhas single external ethernet port, ndev is accessed without being\ninitialized if no TX packets have been processed. It results into null\npointer dereference, causing kernel to crash. Fix this by having a check\non the number of TX packets which have been processed.",
  "id": "GHSA-5m54-qph5-4wvp",
  "modified": "2025-12-11T21:31:26Z",
  "published": "2025-09-22T21:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39856"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/485302905bada953aadfe063320d73c892a66cbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6099f263e1f408bcc7913c9df24b0677164fc5d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2022-49201"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:57Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nibmvnic: fix race between xmit and reset\n\nThere is a race between reset and the transmit paths that can lead to\nibmvnic_xmit() accessing an scrq after it has been freed in the reset\npath. It can result in a crash like:\n\n\tKernel attempted to read user page (0) - exploit attempt? (uid: 0)\n\tBUG: Kernel NULL pointer dereference on read at 0x00000000\n\tFaulting instruction address: 0xc0080000016189f8\n\tOops: Kernel access of bad area, sig: 11 [#1]\n\t...\n\tNIP [c0080000016189f8] ibmvnic_xmit+0x60/0xb60 [ibmvnic]\n\tLR [c000000000c0046c] dev_hard_start_xmit+0x11c/0x280\n\tCall Trace:\n\t[c008000001618f08] ibmvnic_xmit+0x570/0xb60 [ibmvnic] (unreliable)\n\t[c000000000c0046c] dev_hard_start_xmit+0x11c/0x280\n\t[c000000000c9cfcc] sch_direct_xmit+0xec/0x330\n\t[c000000000bfe640] __dev_xmit_skb+0x3a0/0x9d0\n\t[c000000000c00ad4] __dev_queue_xmit+0x394/0x730\n\t[c008000002db813c] __bond_start_xmit+0x254/0x450 [bonding]\n\t[c008000002db8378] bond_start_xmit+0x40/0xc0 [bonding]\n\t[c000000000c0046c] dev_hard_start_xmit+0x11c/0x280\n\t[c000000000c00ca4] __dev_queue_xmit+0x564/0x730\n\t[c000000000cf97e0] neigh_hh_output+0xd0/0x180\n\t[c000000000cfa69c] ip_finish_output2+0x31c/0x5c0\n\t[c000000000cfd244] __ip_queue_xmit+0x194/0x4f0\n\t[c000000000d2a3c4] __tcp_transmit_skb+0x434/0x9b0\n\t[c000000000d2d1e0] __tcp_retransmit_skb+0x1d0/0x6a0\n\t[c000000000d2d984] tcp_retransmit_skb+0x34/0x130\n\t[c000000000d310e8] tcp_retransmit_timer+0x388/0x6d0\n\t[c000000000d315ec] tcp_write_timer_handler+0x1bc/0x330\n\t[c000000000d317bc] tcp_write_timer+0x5c/0x200\n\t[c000000000243270] call_timer_fn+0x50/0x1c0\n\t[c000000000243704] __run_timers.part.0+0x324/0x460\n\t[c000000000243894] run_timer_softirq+0x54/0xa0\n\t[c000000000ea713c] __do_softirq+0x15c/0x3e0\n\t[c000000000166258] __irq_exit_rcu+0x158/0x190\n\t[c000000000166420] irq_exit+0x20/0x40\n\t[c00000000002853c] timer_interrupt+0x14c/0x2b0\n\t[c000000000009a00] decrementer_common_virt+0x210/0x220\n\t--- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c\n\nThe immediate cause of the crash is the access of tx_scrq in the following\nsnippet during a reset, where the tx_scrq can be either NULL or an address\nthat will soon be invalid:\n\n\tibmvnic_xmit()\n\t{\n\t\t...\n\t\ttx_scrq = adapter-\u003etx_scrq[queue_num];\n\t\ttxq = netdev_get_tx_queue(netdev, queue_num);\n\t\tind_bufp = \u0026tx_scrq-\u003eind_buf;\n\n\t\tif (test_bit(0, \u0026adapter-\u003eresetting)) {\n\t\t...\n\t}\n\nBut beyond that, the call to ibmvnic_xmit() itself is not safe during a\nreset and the reset path attempts to avoid this by stopping the queue in\nibmvnic_cleanup(). However just after the queue was stopped, an in-flight\nibmvnic_complete_tx() could have restarted the queue even as the reset is\nprogressing.\n\nSince the queue was restarted we could get a call to ibmvnic_xmit() which\ncan then access the bad tx_scrq (or other fields).\n\nWe cannot however simply have ibmvnic_complete_tx() check the -\u003eresetting\nbit and skip starting the queue. This can race at the \"back-end\" of a good\nreset which just restarted the queue but has not cleared the -\u003eresetting\nbit yet. If we skip restarting the queue due to -\u003eresetting being true,\nthe queue would remain stopped indefinitely potentially leading to transmit\ntimeouts.\n\nIOW -\u003eresetting is too broad for this purpose. Instead use a new flag\nthat indicates whether or not the queues are active. Only the open/\nreset paths control when the queues are active. ibmvnic_complete_tx()\nand others wake up the queue only if the queue is marked active.\n\nSo we will have:\n\tA. reset/open thread in ibmvnic_cleanup() and __ibmvnic_open()\n\n\t\t-\u003eresetting = true\n\t\t-\u003etx_queues_active = false\n\t\tdisable tx queues\n\t\t...\n\t\t-\u003etx_queues_active = true\n\t\tstart tx queues\n\n\tB. Tx interrupt in ibmvnic_complete_tx():\n\n\t\tif (-\u003etx_queues_active)\n\t\t\tnetif_wake_subqueue();\n\nTo ensure that -\u003etx_queues_active and state of the queues are consistent,\nwe need a lock which:\n\n\t- must also be taken in the interrupt path (ibmvnic_complete_tx())\n\t- shared across the multiple\n---truncated---",
  "id": "GHSA-5m5f-j2wx-5r78",
  "modified": "2025-03-18T21:31:59Z",
  "published": "2025-03-18T21:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49201"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bd58abf595b6cf1ba6dd47ec887c4c009155fc9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4219196d1f662cb10a462eb9e076633a3fc31a15"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/475f9cce98b63bc145b4efa66fa51175d4cb345f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8507c6ade73cdbbbda5c3d31d67f52f2e1cf03fe"
    }
  ],
  "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"
    }
  ]
}