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CWE-416: Use After Free, page 193

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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

What the weakness is: CWE-416 at MITRE

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Show the promptExplain CWE-416: Use After Free and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/416.html and https://cve.bz/cve/cwe/416?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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  1. –CVE-2010-2300ExploitEPSS 8.9%

    Use-after-free vulnerability in the Element::normalizeAttributes function in dom/Element.cpp in WebCore in WebKit in Google Chrome before 5.0.375.70 allows remote attackers to execute arbitrary code or cause a denial of service (memory cor…

  2. 7.0CVE-2010-1437ExploitEPSS 0.7%

    Race condition in the find_keyring_by_name function in security/keys/keyring.c in the Linux kernel 2.6.34-rc5 and earlier allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified oth…

  3. 6.5CVE-2010-0629EPSS 5.5%

    Use-after-free vulnerability in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote authenticated users to cause a denial of service (daemon crash) via a request from a kadmin client that se…

  4. 8.8CVE-2010-0050ExploitEPSS 12%

    Use-after-free vulnerability in WebKit in Apple Safari before 4.0.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via an HTML document with improperly nested tags.

  5. 8.8CVE-2010-0806KEVExploitEPSS 82%

    Use-after-free vulnerability in the Peer Objects component (aka iepeers.dll) in Microsoft Internet Explorer 6, 6 SP1, and 7 allows remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the dele…

  6. 7.5CVE-2010-0302EPSS 2.6%

    Use-after-free vulnerability in the abstract file-descriptor handling interface in the cupsdDoSelect function in scheduler/select.c in the scheduler in cupsd in CUPS before 1.4.4, when kqueue or epoll is used, allows remote attackers to ca…

  7. 8.1CVE-2010-0248ExploitEPSS 53%

    Microsoft Internet Explorer 6, 6 SP1, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to m…

  8. 8.8CVE-2010-0378EPSS 6.2%

    Use-after-free vulnerability in Adobe Flash Player 6.0.79, as distributed in Microsoft Windows XP SP2 and SP3, allows remote attackers to execute arbitrary code by unloading a Flash object that is currently being accessed by a script, lead…

  9. 8.8CVE-2010-0249KEVExploitEPSS 92%

    Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 all…

  10. 7.8CVE-2009-4324KEVExploitEPSS 82%

    Use-after-free vulnerability in the Doc.media.newPlayer method in Multimedia.api in Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, allows remote attackers to execute arbitrary code via a crafted PDF fi…

  11. 8.1CVE-2009-3671EPSS 21%

    Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption,…

  12. 7.5CVE-2009-3553EPSS 3.9%

    Use-after-free vulnerability in the abstract file-descriptor handling interface in the cupsdDoSelect function in scheduler/select.c in the scheduler in cupsd in CUPS 1.3.7 and 1.3.10 allows remote attackers to cause a denial of service (da…

  13. 9.9CVE-2009-3616EPSS 3.9%

    Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting dur…

  14. 8.8CVE-2009-3658ExploitEPSS 8.9%

    Use-after-free vulnerability in the Sb.SuperBuddy.1 ActiveX control (sb.dll) in America Online (AOL) 9.5.0.1 allows remote attackers to trigger memory corruption or possibly execute arbitrary code via a malformed argument to the SetSuperBu…

  15. 6.5CVE-2009-2416EPSS 2.0%

    Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeratio…

  16. 7.5CVE-2009-1837EPSS 4.3%

    Race condition in the NPObjWrapper_NewResolve function in modules/plugin/base/src/nsJSNPRuntime.cpp in xul.dll in Mozilla Firefox 3 before 3.0.11 might allow remote attackers to execute arbitrary code via a page transition during Java appl…

  17. 7.8CVE-2009-0749EPSS 1.6%

    Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that c…

  18. 9.8CVE-2008-5038EPSS 6.2%

    Use-after-free vulnerability in the NetWare Core Protocol (NCP) feature in Novell eDirectory 8.7.3 SP10 before 8.7.3 SP10 FTF1 and 8.8 SP2 for Windows allows remote attackers to cause a denial of service and possibly execute arbitrary code…

  19. –CVE-2008-3077EPSS 0.4%

    arch/x86/kernel/ptrace.c in the Linux kernel before 2.6.25.10 on the x86_64 platform leaks task_struct references into the sys32_ptrace function, which allows local users to cause a denial of service (system crash) or have unspecified othe…

  20. 8.8CVE-2008-0077EPSS 37%

    Use-after-free vulnerability in Microsoft Internet Explorer 6 SP1, 6 SP2, and and 7 allows remote attackers to execute arbitrary code by assigning malformed values to certain properties, as demonstrated using the by property of an animateM…

  21. –CVE-2007-3929EPSS 6.5%

    Use-after-free vulnerability in the BitTorrent support in Opera before 9.22 allows user-assisted remote attackers to execute arbitrary code via a crafted header in a torrent file, which leaves a dangling pointer to an invalid object.

  22. 7.5CVE-2006-4997EPSS 4.9%

    The clip_mkip function in net/atm/clip.c of the ATM subsystem in Linux kernel allows remote attackers to cause a denial of service (panic) via unknown vectors that cause the ATM subsystem to access the memory of socket buffers after they a…

  23. 7.5CVE-2006-4434EPSS 4.5%

    Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long "header line", which causes a previously freed variable to be referenced. NOTE: the original developer has dispu…