{"id":"CVE-2011-1823","published":"2011-06-09T10:36:27Z","modified":"2026-06-16T23:30:11Z","title":"Android OS Privilege Escalation Vulnerability","vendor":"Android","product":"Android OS","tier":"core","eol":null,"description":{"text":"The vold volume manager daemon on Android 3.0 and 2.x before 2.3.4 trusts messages that are received from a PF_NETLINK socket, which allows local users to execute arbitrary code and gain root privileges via a negative index that bypasses a maximum-only signed integer check in the DirectVolume::handlePartitionAdded method, which triggers memory corruption, as demonstrated by Gingerbreak.","provenance":"source","from":"NVD"},"summary":{"text":"The vold volume manager daemon in Android OS (versions 3.0 and 2.x before 2.3.4) trusts messages received from a PF_NETLINK socket, and its DirectVolume::handlePartitionAdded method fails to properly validate a negative index because it only checks the maximum value of a signed integer. An attacker with local access and low privileges can send a crafted negative index to trigger memory corruption, allowing arbitrary code execution and root privilege escalation, with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:04:01Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.41367,"percentile":0.98667,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-09-08","dueDate":"2022-09-29","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://android.googlesource.com/platform/system/vold/+/c51920c82463b240e2be0430849837d6fdc5352e; https://nvd.nist.gov/vuln/detail/CVE-2011-1823","provenance":"source"},"vulncheckKev":{"dateAdded":"2021-08-17","exploitedFirstSeen":"2021-08-17","ransomware":false,"evidence":[{"url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","date":"2021-08-17"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-09-08"}],"evidenceTotal":2,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-189","name":null}],"references":[{"url":"http://android.git.kernel.org/?p=platform/system/core.git%3Ba=commit%3Bh=b620a0b1c7ae486e979826200e8e441605b0a5d6","tags":["Broken Link"]},{"url":"http://android.git.kernel.org/?p=platform/system/netd.git%3Ba=commit%3Bh=79b579c92afc08ab12c0a5788d61f2dd2934836f","tags":["Broken Link"]},{"url":"http://android.git.kernel.org/?p=platform/system/vold.git%3Ba=commit%3Bh=c51920c82463b240e2be0430849837d6fdc5352e","tags":["Broken Link"]},{"url":"http://androidcommunity.com/gingerbreak-root-for-gingerbread-app-20110421/","tags":["Broken Link"]},{"url":"http://c-skills.blogspot.com/2011/04/yummy-yummy-gingerbreak.html","tags":["Exploit","Issue Tracking"]},{"url":"http://forum.xda-developers.com/showthread.php?t=1044765","tags":["Exploit","Issue Tracking"]},{"url":"http://www.androidpolice.com/2011/05/03/google-patches-gingerbreak-exploit-but-dont-worry-we-still-have-root-for-now/","tags":["Press/Media Coverage"]},{"url":"http://xorl.wordpress.com/2011/04/28/android-vold-mpartminors-signedness-issue/","tags":["Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/67977","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://android.git.kernel.org/?p=platform/system/core.git%3Ba=commit%3Bh=b620a0b1c7ae486e979826200e8e441605b0a5d6","tags":["Broken Link"]},{"url":"http://android.git.kernel.org/?p=platform/system/netd.git%3Ba=commit%3Bh=79b579c92afc08ab12c0a5788d61f2dd2934836f","tags":["Broken Link"]},{"url":"http://android.git.kernel.org/?p=platform/system/vold.git%3Ba=commit%3Bh=c51920c82463b240e2be0430849837d6fdc5352e","tags":["Broken Link"]},{"url":"http://androidcommunity.com/gingerbreak-root-for-gingerbread-app-20110421/","tags":["Broken Link"]},{"url":"http://c-skills.blogspot.com/2011/04/yummy-yummy-gingerbreak.html","tags":["Exploit","Issue Tracking"]},{"url":"http://forum.xda-developers.com/showthread.php?t=1044765","tags":["Exploit","Issue Tracking"]},{"url":"http://www.androidpolice.com/2011/05/03/google-patches-gingerbreak-exploit-but-dont-worry-we-still-have-root-for-now/","tags":["Press/Media Coverage"]},{"url":"http://xorl.wordpress.com/2011/04/28/android-vold-mpartminors-signedness-issue/","tags":["Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/67977","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-1823","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: local exploit escalates to root privileges","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows local users to execute arbitrary code and gain root privileges","start":133,"end":202}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: arbitrary code execution as impact","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allows local users to execute arbitrary code","start":133,"end":177}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-93c55e10ab45afc37c85","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/E/B/0/EB0F50CC-989C-4B66-B7F6-68CD3DC90DE3/Microsoft_Security_Intelligence_Report_Volume_21_English.pdf","date":null,"mentions":[{"quote":"5%\r\n0.10%\r\n0.15%\r\n0.20%\r\n0.25%\r\n3Q15 4Q15 1Q16 2Q16\r\nEncounter rate (percent of all reporting computers)\r\nWin32/CplLnk\r\n(see below)\r\n0.000%\r\n0.001%\r\n0.002%\r\n0.003%\r\n0.004%\r\n0.005%\r\n0.006%\r\n0.007%\r\n0.008%\r\n3Q15 4Q15 1Q16 2Q16\r\nEncounter rate (percent of all reporting computers)\r\nUnix/Lotoor\r\nCVE-2014-6332\r\nCVE-2011-1823","start":108095,"end":108415},{"quote":" CVE-2011-1823 is sometimes called the GingerBreak","start":109263,"end":109314},{"quote":"exploit for the CVE-2011-1823 vulnerability disguised as an image file.","start":109605,"end":109676},{"quote":"CVE-2011-1823, 60, 61","start":261273,"end":261294},{"quote":"See CVE-2011-1823","start":263742,"end":263759}]},{"id":"SRC-619721166ae9d9d7fdcd","title":"Microsoft Security","publisher":"download.microsoft.com","url":"https://download.microsoft.com/download/4/4/C/44CDEF0E-7924-4787-A56A-16261691ACE3/Microsoft_Security_Intelligence_Report_Volume_19_English.pdf","date":null,"mentions":[{"quote":"of Microsoft Security Intelligence Report, Volume\r\n18 (July–December 2014), available from the Microsoft Download Center, for\r\n0.00%\r\n0.05%\r\n0.10%\r\n0.15%\r\n0.20%\r\n0.25%\r\n0.30%\r\n0.35%\r\n0.40%\r\n3Q14 4Q14 1Q15 2Q15\r\nEncounter rate (percent of all reporting computers)\r\nWin32/CplLnk\r\nCVE-2014-6332\r\nUnix/Lotoor\r\nCVE-2011-1823","start":88668,"end":88987},{"quote":" CVE-2011-1823 is sometimes called the GingerBreak","start":90356,"end":90407},{"quote":"bundled with clean applications, and includes an exploit for the CVE-\r\n2011-1823 vulnerability disguised as an image file.","start":90648,"end":90770},{"quote":"CVE-2011-1823, 50, 51","start":238034,"end":238055},{"quote":"See CVE-2011-1823","start":240644,"end":240661}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2011-1821","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-1821","exploited":true,"exploitedSince":"2022-09-08","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":["http://c-skills.blogspot.com/2011/04/yummy-yummy-gingerbreak.html","http://forum.xda-developers.com/showthread.php?t=1044765","http://xorl.wordpress.com/2011/04/28/android-vold-mpartminors-signedness-issue/"],"flow":[{"stage":"exploitation","techniques":["T1068"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2011-06-09","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1823","provenance":"source"},{"date":"2021-08-17","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://dl.acm.org/doi/pdf/10.1145/3465481.3465758","provenance":"source"},{"date":"2022-09-08","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-09-08","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-1821","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":4109},"priority":{"score":74.3,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1899 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.73,"detail":"percentile 0.9867"},{"name":"Named in threat reports","points":6.13,"detail":"2 reports"},{"name":"Public exploit code","points":5.0,"detail":"3 NVD references tagged Exploit"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}