{"id":"CVE-2026-14258","aliases":["ALSA-2026:54210","AZL-91710","BELL-CVE-2026-14258","DEBIAN-CVE-2026-14258","EUVD-2026-40941","GHSA-hm5v-wwxq-27x8","RHSA-2026:54210","RLSA-2026:54210","UBUNTU-CVE-2026-14258"],"status":"published","title":"Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00397,"percentile":0.34326,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-835"],"published":"2026-07-01T09:24:51Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"AlmaLinux:10","package":"dhcpcd","fixed_in":["10.0.6-11.el10_2"],"sources":["osv"]},{"ecosystem":"Azure Linux:3","package":"dhcpcd","fixed_in":["10.0.8-4"],"sources":["osv"]},{"ecosystem":"Alpaquita:23","package":"dhcpcd","fixed_in":["9.4.1-r5"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"dhcpcd","fixed_in":["10.2.0-r0"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"dhcpcd","fixed_in":["1:10.1.0-11+deb13u4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dhcpcd","fixed_in":["1:10.2.4-3"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd","fixed_in":["0:10.0.6-11.el10_2"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd-debuginfo","fixed_in":["0:10.0.6-11.el10_2"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd-debugsource","fixed_in":["0:10.0.6-11.el10_2"],"sources":["osv"]},{"ecosystem":"Rocky Linux:10","package":"dhcpcd","fixed_in":["0:10.0.6-11.el10_2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"AlmaLinux:10","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.0.6-11.el10_2"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.0.8-4"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.4.1-r1"},{"fixed":"9.4.1-r5"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.4.1-r3"},{"fixed":"10.2.0-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:10.1.0-11+deb13u4"}]}],"versions":["1:10.1.0-11","1:10.1.0-11+deb13u1","1:10.1.0-11+deb13u2","1:10.1.0-11+deb13u3"]},{"source":"osv","ecosystem":"Debian:14","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:10.2.4-3"}]}],"versions":["1:10.1.0-11","1:10.1.0-12","1:10.2.0-1","1:10.2.2-1","1:10.2.2-2","1:10.2.2-3","1:10.2.2-4","1:10.2.2-5","1:10.2.2-6","1:10.2.3-1","1:10.2.4-1","1:10.2.4-2"]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:10.0.6-11.el10_2"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:10.0.6-11.el10_2"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"dhcpcd-debugsource","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:10.0.6-11.el10_2"}]}]},{"source":"osv","ecosystem":"Rocky Linux:10","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:10.0.6-11.el10_2"}]}]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.0.2-3ubuntu3","1:10.0.5-1","1:10.0.5-2","1:10.0.5-3","1:10.0.5-4","1:10.0.5-5","1:10.0.6-1","1:10.0.6-1ubuntu1","1:10.0.6-1ubuntu2","1:10.0.6-1ubuntu3","1:10.0.6-1ubuntu3.1","1:10.0.6-1ubuntu3.2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"dhcpcd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.1.0-8","1:10.1.0-10","1:10.1.0-11","1:10.1.0-12","1:10.2.4-3","1:10.2.4-4"]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:54210","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-14258","tags":["vdb-entry","x_refsource_REDHAT","report","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462305","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://github.com/NetworkConfiguration/dhcpcd/commit/75289ca","tags":["fix","article"]},{"url":"https://github.com/NetworkConfiguration/dhcpcd/issues/415","tags":["exploit","report","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-14258","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-hm5v-wwxq-27x8"},{"url":"https://bugzilla.redhat.com/2462305","tags":["report"]},{"url":"https://errata.almalinux.org/10/ALSA-2026-54210.html","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-14258","tags":["advisory"]},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14258.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-14258","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54210.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-14258","tags":["advisory","report"]},{"url":"https://errata.rockylinux.org/RLSA-2026:54210","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-14258","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-14258","title":"Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T09:24:51.479Z","modified":"2026-11-05T16:40:56.406Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-05T17:53:58.925122Z"}],"euvd":[{"id":"EUVD-2026-40941","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T09:24:51Z","modified":"2026-11-05T16:40:56Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T18:00:57.863749Z"}],"ghsa":[{"id":"GHSA-hm5v-wwxq-27x8","title":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially...","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T12:31:35Z","modified":"2026-08-12T18:32:05Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:10:23.360888Z"}],"nvd":[{"id":"CVE-2026-14258","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T11:16:25.98Z","modified":"2026-10-25T17:10:00.197Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:12:27.199837Z"}],"osv":[{"id":"BELL-CVE-2026-14258","status":"published","published":"2026-07-04T06:04:35.848984Z","modified":"2026-07-14T07:15:04.746383523Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"CVE-2026-14258","title":"Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T09:24:51.479Z","modified":"2026-11-05T21:16:16.948226945Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-835"],"updated_at":"2026-11-05T22:00:58.054534Z"},{"id":"DEBIAN-CVE-2026-14258","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T11:16:25.98Z","modified":"2026-10-26T11:47:26.1582663Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:51.8748Z"},{"id":"RHSA-2026:54210","title":"Red Hat Security Advisory: dhcpcd security update","status":"published","published":"2026-08-13T10:17:35Z","modified":"2026-08-13T10:33:31.75158427Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:21.457353Z"},{"id":"RLSA-2026:54210","title":"Moderate: dhcpcd security update","description":"The dhcpcd package provides a minimalistic network configuration daemon that supports IPv4 and IPv6 configuration including configuration discovery through NDP, DHCPv4 and DHCPv6 protocols.\n\nSecurity Fix(es):\n\n* dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router Advertisement handling (CVE-2026-14258)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-08-13T12:08:06.655555Z","modified":"2026-08-13T12:30:03.538453934Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:26.111232Z"},{"id":"UBUNTU-CVE-2026-14258","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T11:16:00Z","modified":"2026-09-25T00:40:23.508024183Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:00.592716Z"},{"id":"ALSA-2026:54210","title":"Moderate: dhcpcd security update","description":"The dhcpcd package provides a minimalistic network configuration daemon that supports IPv4 and IPv6 configuration including configuration discovery through NDP, DHCPv4 and DHCPv6 protocols.  \n\nSecurity Fix(es):  \n\n  * dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length IPv6 ND option in Router Advertisement handling (CVE-2026-14258)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-08-12T00:00:00Z","modified":"2026-10-29T11:30:37.617157587Z","updated_at":"2026-11-02T15:27:54.753319Z"},{"id":"AZL-91710","title":"CVE-2026-14258 affecting package dhcpcd for versions less than 10.0.8-4","description":"A flaw was found in dhcpcd's IPv6 Neighbor Discovery Router Advertisement processing. A specially crafted IPv6 Router Advertisement containing a zero-length Neighbor Discovery option can bypass validation during packet storage and later be reparsed without adequate validation, causing the parser to enter a non-advancing loop. Successful exploitation may result in excessive CPU consumption, leading to a denial of service.","status":"published","published":"2026-07-01T11:16:25Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:25.633663Z"}]}}