{"id":"CVE-2016-6323","aliases":["BELL-CVE-2016-6323","DEBIAN-CVE-2016-6323","EUVD-2016-7250","GHSA-xrcf-wxwq-5jmq","UBUNTU-CVE-2016-6323","USN-3239-1","openSUSE-SU-2024:10792-1"],"status":"published","title":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution...","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03872,"percentile":0.90276,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284"],"published":"2016-10-07T00:00:00Z","modified":"2026-10-24T10:30:51Z","fixes":[{"ecosystem":"Debian:12","package":"glibc","fixed_in":["2.24-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"glibc","fixed_in":["2.24-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"glibc","fixed_in":["2.24-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"eglibc","fixed_in":["2.19-0ubuntu6.10"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"glibc","fixed_in":["2.23-0ubuntu6"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.24-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.24-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.24-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"eglibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19-0ubuntu6.10"}]}],"versions":["2.17-93ubuntu4","2.18-0ubuntu1","2.18-0ubuntu2","2.18-0ubuntu4","2.18-0ubuntu5","2.18-0ubuntu6","2.18-0ubuntu7","2.19-0ubuntu2","2.19-0ubuntu3","2.19-0ubuntu4","2.19-0ubuntu5","2.19-0ubuntu6","2.19-0ubuntu6.1","2.19-0ubuntu6.3","2.19-0ubuntu6.4","2.19-0ubuntu6.5","2.19-0ubuntu6.6","2.19-0ubuntu6.7","2.19-0ubuntu6.8","2.19-0ubuntu6.9"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.23-0ubuntu6"}]}],"versions":["2.21-0ubuntu4","2.21-0ubuntu5","2.21-0ubuntu6","2.23-0ubuntu1","2.23-0ubuntu2","2.23-0ubuntu3","2.23-0ubuntu4","2.23-0ubuntu5"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"eglibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19-0ubuntu6.10"}]}],"versions":["2.17-93ubuntu4","2.18-0ubuntu1","2.18-0ubuntu2","2.18-0ubuntu4","2.18-0ubuntu5","2.18-0ubuntu6","2.18-0ubuntu7","2.19-0ubuntu2","2.19-0ubuntu3","2.19-0ubuntu4","2.19-0ubuntu5","2.19-0ubuntu6","2.19-0ubuntu6.1","2.19-0ubuntu6.3","2.19-0ubuntu6.4","2.19-0ubuntu6.5","2.19-0ubuntu6.6","2.19-0ubuntu6.7","2.19-0ubuntu6.8","2.19-0ubuntu6.9"],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.23-0ubuntu6"}]}],"versions":["2.21-0ubuntu4","2.21-0ubuntu5","2.21-0ubuntu6","2.23-0ubuntu1","2.23-0ubuntu2","2.23-0ubuntu3","2.23-0ubuntu4","2.23-0ubuntu5"],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"glibc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.34-1.2"}]}],"bundled":34}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"gnu","product":"glibc"},{"vendor":"opensuse","product":"opensuse"}],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/92532","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www-01.ibm.com/support/docview.wss?uid=swg21995039","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=20435","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/201706-19","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/08/18/12","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","report"]},{"url":"http://lists.opensuse.org/opensuse-updates/2016-10/msg00009.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6323"},{"url":"https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB"},{"url":"https://github.com/advisories/GHSA-xrcf-wxwq-5jmq"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2016-6323","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-6323","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-6323","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3239-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-6323","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-5180","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-8982","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-8983","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-8984","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-1234","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-3706","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4429","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-5417","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2009-5064","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-5155","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-3192","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-5180","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-10228","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-10739","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6261","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6323","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-1000366","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-1000408","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12132","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12133","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15670","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-16997","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17426","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-18269","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1000001","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-11236","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-11237","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-19591","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-6485","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-19126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-25013","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-7309","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-9169","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10029","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-1752","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27618","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29562","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-29573","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-6096","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-27645","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-3326","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-33574","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2016-6323","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T14:00:00Z","modified":"2024-08-06T01:29:18.318Z","updated_at":"2026-11-02T14:33:34.815789Z"}],"euvd":[{"id":"EUVD-2016-7250","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T14:00:00Z","modified":"2024-08-06T01:29:18Z","updated_at":"2026-11-03T02:22:39.91691Z"}],"ghsa":[{"id":"GHSA-xrcf-wxwq-5jmq","title":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution...","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2022-05-14T02:08:58Z","modified":"2025-04-12T13:06:16Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:01:29.780856Z"}],"nvd":[{"id":"CVE-2016-6323","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T14:59:06.007Z","modified":"2026-06-17T00:50:49.8Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:03:31.485755Z"}],"osv":[{"id":"BELL-CVE-2016-6323","title":"CVE-2016-6323 does not affect BellSoft software","status":"withdrawn","published":"2016-10-07T14:59:00Z","modified":"2026-01-26T09:46:59.872649Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:14.137943Z"},{"id":"CVE-2016-6323","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T14:59:06.007Z","modified":"2026-10-24T10:30:51.87278115Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:02.776224Z"},{"id":"DEBIAN-CVE-2016-6323","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T14:59:06.007Z","modified":"2026-09-22T07:02:11.376503965Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:27.910042Z"},{"id":"UBUNTU-CVE-2016-6323","description":"The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.","status":"published","published":"2016-10-07T00:00:00Z","modified":"2026-04-22T10:49:29.489589Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.642042Z"},{"id":"openSUSE-SU-2024:10792-1","title":"glibc-2.34-1.2 on GA media","description":"These are all security issues fixed in the glibc-2.34-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:52:58.912445Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"USN-3239-1","title":"eglibc, glibc vulnerabilities","description":"It was discovered that the GNU C Library incorrectly handled the\nstrxfrm() function. An attacker could use this issue to cause a denial\nof service or possibly execute arbitrary code. This issue only affected\nUbuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8982)\n\nIt was discovered that an integer overflow existed in the\n_IO_wstr_overflow() function of the GNU C Library. An attacker could\nuse this to cause a denial of service or possibly execute arbitrary\ncode. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04\nLTS. (CVE-2015-8983)\n\nIt was discovered that the fnmatch() function in the GNU C Library\ndid not properly handle certain malformed patterns. An attacker could\nuse this to cause a denial of service. This issue only affected Ubuntu\n12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8984)\n\nAlexander Cherepanov discovered a stack-based buffer overflow in the\nglob implementation of the GNU C Library. An attacker could use this\nto specially craft a directory layout and cause a denial of service.\n(CVE-2016-1234)\n\nFlorian Weimer discovered a NULL pointer dereference in the DNS\nresolver of the GNU C Library. An attacker could use this to cause\na denial of service. (CVE-2015-5180)\n\nMichael Petlan discovered an unbounded stack allocation in the\ngetaddrinfo() function of the GNU C Library. An attacker could use\nthis to cause a denial of service. (CVE-2016-3706)\n\nAldy Hernandez discovered an unbounded stack allocation in the sunrpc\nimplementation in the GNU C Library. An attacker could use this to\ncause a denial of service. (CVE-2016-4429)\n\nTim Ruehsen discovered that the getaddrinfo() implementation in the\nGNU C Library did not properly track memory allocations. An attacker\ncould use this to cause a denial of service. This issue only affected\nUbuntu 16.04 LTS. (CVE-2016-5417)\n\nAndreas Schwab discovered that the GNU C Library on ARM 32-bit\nplatforms did not properly set up execution contexts. An attacker\ncould use this to cause a denial of service. (CVE-2016-6323)\n","status":"published","published":"2017-03-21T02:58:45Z","modified":"2026-04-22T09:33:26.698116Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}