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CWE-476: NULL Pointer Dereference, page 116

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

What the weakness is: CWE-476 at MITRE

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Show the promptExplain CWE-476: NULL Pointer Dereference and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/476.html and https://cve.bz/cve/cwe/476?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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  1. 6.5CVE-2016-6292EPSS 3.9%

    The exif_process_user_comment function in ext/exif/exif.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted J…

  2. 5.5CVE-2016-4649EPSS 0.3%

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  3. 7.8CVE-2016-4627EPSS 0.4%

    IOAcceleratorFamily in Apple iOS before 9.3.3, tvOS before 9.2.2, and watchOS before 2.2.2 allows local users to gain privileges or cause a denial of service (NULL pointer dereference) via unspecified vectors.

  4. 7.8CVE-2016-4626EPSS 0.4%

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  5. 6.5CVE-2016-4605EPSS 1.9%

    Calendar in Apple iOS before 9.3.3 allows remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a crafted invitation.

  6. 5.5CVE-2016-1865EPSS 0.4%

    The kernel in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows local users to cause a denial of service (NULL pointer dereference) via unspecified vectors.

  7. 7.5CVE-2016-4957EPSS 45%

    ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.

  8. 5.0CVE-2016-2391EPSS 0.4%

    The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple e…

  9. 7.5CVE-2016-4450EPSS 16%

    os/unix/ngx_files.c in nginx before 1.10.1 and 1.11.x before 1.11.1 allows remote attackers to cause a denial of service (NULL pointer dereference and worker process crash) via a crafted request, involving writing a client request body to …

  10. 5.5CVE-2016-1814EPSS 1.1%

    IOAcceleratorFamily in Apple iOS before 9.3.2, OS X before 10.11.5, and tvOS before 9.2.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted app.

  11. 7.8CVE-2016-1813ExploitEPSS 4.9%

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  12. 6.5CVE-2016-1811EPSS 2.2%

    ImageIO in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted image.

  13. 7.8CVE-2016-1803ExploitEPSS 5.1%

    CoreCapture in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (NULL pointer dereference) via a crafte…

  14. 4.6CVE-2016-2782ExploitEPSS 1.6%

    The treo_attach function in drivers/usb/serial/visor.c in the Linux kernel before 4.5 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact …

  15. 4.6CVE-2015-7515ExploitEPSS 1.8%

    The aiptek_probe function in drivers/input/tablet/aiptek.c in the Linux kernel before 4.4 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted USB device that lacks en…

  16. 6.0CVE-2015-8551EPSS 0.5%

    The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host…

  17. 7.5CVE-2016-0742EPSS 82%

    The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference and worker process crash) via a crafted UDP DNS response.

  18. 9.8CVE-2015-8787EPSS 9.2%

    The nf_nat_redirect_ipv4 function in net/netfilter/nf_nat_redirect.c in the Linux kernel before 4.4 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact …

  19. 7.8CVE-2015-7068ExploitEPSS 4.2%

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  20. 7.5CVE-2015-3194EPSS 44%

    crypto/rsa/rsa_ameth.c in OpenSSL 1.0.1 before 1.0.1q and 1.0.2 before 1.0.2e allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an RSA PSS ASN.1 signature that lacks a mask generation…

  21. –CVE-2015-4444EPSS 2.7%

    Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC Classic before 2015.006.30060, and Acrobat and Acrobat Reader DC Continuous before 2015.008.20082 on Windows and OS X allow attackers to ca…

  22. –CVE-2015-4443EPSS 2.7%

    Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC Classic before 2015.006.30060, and Acrobat and Acrobat Reader DC Continuous before 2015.008.20082 on Windows and OS X allow attackers to ca…

  23. –CVE-2015-1721ExploitEPSS 3.3%

    The kernel-mode drivers in Microsoft Windows Server 2003 SP2 and R2 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allow local…

  24. –CVE-2015-4047EPSS 9.7%

    racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a series of crafted UDP requests.

  25. –CVE-2014-9708EPSS 56%

    Embedthis Appweb before 4.6.6 and 5.x before 5.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a Range header with an empty value, as demonstrated by "Range: x=,".

  26. –CVE-2015-0095EPSS 2.7%

    The kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allow local users to c…

  27. –CVE-2015-0003ExploitEPSS 4.5%

    win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows l…

  28. –CVE-2014-9660EPSS 5.1%

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  29. –CVE-2014-5353EPSS 5.0%

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  30. –CVE-2014-9323EPSS 2.9%

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  31. 7.8CVE-2014-7826EPSS 0.6%

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  32. –CVE-2014-3640EPSS 0.4%

    The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an unin…

  33. –CVE-2014-3581EPSS 14%

    The cache_merge_headers_out function in modules/cache/cache_util.c in the mod_cache module in the Apache HTTP Server before 2.4.11 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an…

  34. –CVE-2014-4344EPSS 6.6%

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  35. –CVE-2014-5077EPSS 5.8%

    The sctp_assoc_update function in net/sctp/associola.c in the Linux kernel through 3.15.8, when SCTP authentication is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by starting to establi…

  36. –CVE-2014-3470EPSS 86%

    The ssl3_send_client_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h, when an anonymous ECDH cipher suite is used, allows remote attackers to cause a denial of service (NULL pointe…

  37. –CVE-2014-3469EPSS 3.8%

    The (1) asn1_read_value_type and (2) asn1_read_value functions in GNU Libtasn1 before 3.6 allows context-dependent attackers to cause a denial of service (NULL pointer dereference and crash) via a NULL value in an ivalue argument.

  38. –CVE-2014-0190EPSS 4.0%

    The GIF decoder in QtGui in Qt before 5.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via invalid width and height values in a GIF image.

  39. –CVE-2014-0198EPSS 40%

    The do_ssl3_write function in s3_pkt.c in OpenSSL 1.x through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled, does not properly manage a buffer pointer during certain recursive calls, which allows remote attackers to cause a denial of se…

  40. –CVE-2014-2678EPSS 0.4%

    The rds_iw_laddr_check function in net/rds/iw.c in the Linux kernel through 3.14 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a bind system call f…

  41. –CVE-2013-7339EPSS 0.5%

    The rds_ib_laddr_check function in net/rds/ib.c in the Linux kernel before 3.12.8 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a bind system call …

  42. –CVE-2014-2497EPSS 20%

    The gdImageCreateFromXpm function in gdxpm.c in libgd, as used in PHP 5.4.26 and earlier, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted color table in an XPM file.

  43. –CVE-2014-0101EPSS 7.2%

    The sctp_sf_do_5_1D_ce function in net/sctp/sm_statefuns.c in the Linux kernel through 3.13.6 does not validate certain auth_enable and auth_capable fields before making an sctp_sf_authenticate call, which allows remote attackers to cause …

  44. –CVE-2014-0757EPSS 3.6%

    Smart Software Solutions (3S) CoDeSys Runtime Toolkit before 2.4.7.44 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via unspecified vectors.

  45. 6.5CVE-2013-6954EPSS 4.7%

    The png_do_expand_palette function in libpng before 1.6.8 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via (1) a PLTE chunk of zero bytes or (2) a NULL palette, related to pngrtran.c…

  46. –CVE-2011-2519EPSS 0.7%

    Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

  47. –CVE-2013-1418EPSS 5.5%

    The setup_server_realm function in main.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.7, when multiple realms are configured, allows remote attackers to cause a denial of service (NULL pointer dereference …

  48. –CVE-2013-2765ExploitEPSS 14%

    The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NULL pointer dereference, process crash, and disk consumption) via a POST request with a large body and a crafted Content-…

  49. –CVE-2013-1059EPSS 4.5%

    net/ceph/auth_none.c in the Linux kernel through 3.10 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an auth_reply message that triggers an att…

  50. 7.5CVE-2011-2482EPSS 3.8%

    A certain Red Hat patch to the sctp_sock_migrate function in net/sctp/socket.c in the Linux kernel before 2.6.21, as used in Red Hat Enterprise Linux (RHEL) 5, allows remote attackers to cause a denial of service (NULL pointer dereference …