{"id":"CVE-2026-115484","aliases":["AZL-111395","DEBIAN-CVE-2026-115484","EUVD-2026-108555","GHSA-phc9-9w6c-6974","UBUNTU-CVE-2026-115484"],"status":"published","title":"Open-iscsi: open-iscsi: dhcpv4 option parser heap out-of-bounds read in iscsiuio parse_msg","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","severity":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00222,"percentile":0.12824,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-23T00:16:28Z","modified":"2026-11-05T05:40:51Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"iscsi-initiator-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.1.12-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.10-1","2.1.10-2","2.1.10-3","2.1.11-1","2.1.11-2","2.1.11-3","2.1.11-4","2.1.11-5","2.1.11-6","2.1.12-1","2.1.12-2","2.1.13-1","2.1.8-1","2.1.8-1+deb12u1","2.1.8-2","2.1.9-1","2.1.9-2","2.1.9-3","2.1.9-4"]},{"source":"osv","ecosystem":"Debian:13","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.11-1","2.1.11-1+deb13u1","2.1.11-1+deb13u2","2.1.11-2","2.1.11-3","2.1.11-4","2.1.11-5","2.1.11-6","2.1.12-1","2.1.12-2","2.1.13-1"]},{"source":"osv","ecosystem":"Debian:14","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.11-1","2.1.11-2","2.1.11-3","2.1.11-4","2.1.11-5","2.1.11-6","2.1.12-1","2.1.12-2","2.1.13-1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.873-3ubuntu7","2.0.873-3ubuntu8","2.0.873-3ubuntu9"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.873-3ubuntu13","2.0.873+git0.3b4b4500-13ubuntu3","2.0.873+git0.3b4b4500-14ubuntu1","2.0.873+git0.3b4b4500-14ubuntu3","2.0.873+git0.3b4b4500-14ubuntu3.1","2.0.873+git0.3b4b4500-14ubuntu3.2","2.0.873+git0.3b4b4500-14ubuntu3.3","2.0.873+git0.3b4b4500-14ubuntu3.4","2.0.873+git0.3b4b4500-14ubuntu3.5","2.0.873+git0.3b4b4500-14ubuntu3.6","2.0.873+git0.3b4b4500-14ubuntu3.7","2.0.873+git0.3b4b4500-14ubuntu3.7+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.874-4ubuntu3","2.0.874-4ubuntu4","2.0.874-4ubuntu5","2.0.874-5ubuntu1","2.0.874-5ubuntu2","2.0.874-5ubuntu2.1","2.0.874-5ubuntu2.2","2.0.874-5ubuntu2.3","2.0.874-5ubuntu2.4","2.0.874-5ubuntu2.6","2.0.874-5ubuntu2.7","2.0.874-5ubuntu2.9","2.0.874-5ubuntu2.10","2.0.874-5ubuntu2.11","2.0.874-5ubuntu2.11+esm1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.874-7.1ubuntu3","2.0.874-7.1ubuntu5","2.0.874-7.1ubuntu6","2.0.874-7.1ubuntu6.1","2.0.874-7.1ubuntu6.2","2.0.874-7.1ubuntu6.3","2.0.874-7.1ubuntu6.4","2.0.874-7.1ubuntu6.5"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.4-0ubuntu1","2.1.4-0ubuntu2","2.1.4-0ubuntu3","2.1.4-0ubuntu4","2.1.5-1ubuntu1","2.1.5-1ubuntu1.1","2.1.5-1ubuntu1.3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.8-1ubuntu2","2.1.9-3ubuntu1","2.1.9-3ubuntu2","2.1.9-3ubuntu3","2.1.9-3ubuntu4","2.1.9-3ubuntu5.1","2.1.9-3ubuntu5.2","2.1.9-3ubuntu5.3","2.1.9-3ubuntu5.4","2.1.9-3ubuntu5.5"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.11-3ubuntu3","2.1.11-5ubuntu1","2.1.11-5ubuntu4","2.1.11-5ubuntu5","2.1.11-5ubuntu6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"open-iscsi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.11-1ubuntu3","2.1.11-3ubuntu1","2.1.11-3ubuntu2","2.1.11-3ubuntu3","2.1.11-3ubuntu3.1"]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-115484","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2556265","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115484","tags":["web"]},{"url":"https://github.com/advisories/GHSA-phc9-9w6c-6974"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-115484","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-115484","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-115484","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-115484","title":"Open-iscsi: open-iscsi: dhcpv4 option parser heap out-of-bounds read in iscsiuio parse_msg","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T00:16:28.943Z","modified":"2026-11-05T16:23:13.314Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-05T17:53:58.925122Z"}],"euvd":[{"id":"EUVD-2026-108555","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T00:16:28Z","modified":"2026-11-05T16:23:13Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-05T18:00:58.377138Z"}],"ghsa":[{"id":"GHSA-phc9-9w6c-6974","title":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly...","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T03:30:21Z","modified":"2026-10-23T03:30:22Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:14:18.215402Z"}],"nvd":[{"id":"CVE-2026-115484","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T01:16:53.67Z","modified":"2026-11-05T17:17:41.47Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-05T19:56:06.044988Z"}],"osv":[{"id":"DEBIAN-CVE-2026-115484","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T01:16:53.67Z","modified":"2026-10-29T09:47:39.559143296Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:50.923612Z"},{"id":"UBUNTU-CVE-2026-115484","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T01:16:00Z","modified":"2026-10-28T17:50:38Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:00.081948Z"},{"id":"AZL-111395","title":"CVE-2026-115484 affecting package iscsi-initiator-utils 2.1.12-1","description":"A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.","status":"published","published":"2026-10-23T01:16:53Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:18.705965Z"}]}}