{"id":"CVE-2016-6522","aliases":["EUVD-2016-7443","GHSA-3g72-28w7-c4jp"],"status":"published","title":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local...","description":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00445,"percentile":0.38983,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2017-03-07T16:00:00Z","modified":"2026-06-17T00:51:19Z","products":[{"vendor":"openbsd","product":"openbsd"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/08/02/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"http://www.openwall.com/lists/oss-security/2016/08/02/12","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/92264","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6522"},{"url":"https://github.com/advisories/GHSA-3g72-28w7-c4jp"}],"sources":{"cve":[{"id":"CVE-2016-6522","description":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.","status":"published","published":"2017-03-07T16:00:00Z","modified":"2024-08-06T01:29:20.253Z","updated_at":"2026-11-02T14:33:34.443637Z"}],"euvd":[{"id":"EUVD-2016-7443","description":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.","status":"published","published":"2017-03-07T16:00:00Z","modified":"2024-08-06T01:29:20Z","updated_at":"2026-11-03T02:22:36.370031Z"}],"ghsa":[{"id":"GHSA-3g72-28w7-c4jp","title":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local...","description":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.","status":"published","published":"2022-05-17T02:56:08Z","modified":"2023-01-27T05:05:49Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:42:46.624086Z"}],"nvd":[{"id":"CVE-2016-6522","description":"Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.","status":"published","published":"2017-03-07T16:59:00.837Z","modified":"2026-06-17T00:51:19.24Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:03:37.238712Z"}]}}