{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14258 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-14258 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-14258 and fix it if it is affected.\n\nWhat it is: CVE-2026-14258 is a medium-severity denial of service vulnerability in Red Hat Enterprise Linux 10, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14258 exists.\n\nAffected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-14258/ (Markdown: https://insights.sbomify.com/CVE-2026-14258/index.md)","id":"CVE-2026-14258","markdown":"https://insights.sbomify.com/CVE-2026-14258/index.md","name":"CVE-2026-14258","record":{"aliases":["ALSA-2026:54210","AZL-91710","BELL-CVE-2026-14258","DEBIAN-CVE-2026-14258","GHSA-hm5v-wwxq-27x8","RHSA-2026:54210","RLSA-2026:54210","UBUNTU-CVE-2026-14258"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux DHCP client","requires_auth":"none","summary":"A remote attacker can cause a denial of service in dhcpcd by sending a crafted IPv6 Router Advertisement with a zero-length option, leading to an infinite loop.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"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.","ecosystems":["AlmaLinux:10","Red Hat:enterprise_linux:10.2","Rocky Linux:10"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero-length ipv6 nd option in router advertisement handling","id":"CVE-2026-14258","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":5,"n_references":5,"next":{"headline":"Board archive import bypasses team board creation permissions","id":"CVE-2026-14259"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["10.0.6-11.el10_2"],"introduced":["0"],"last_affected":[],"package":"dhcpcd","purl":"pkg:rpm/almalinux/dhcpcd","source":"ALSA-2026:54210"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:10.0.6-11.el10_2"],"introduced":["0"],"last_affected":[],"package":"dhcpcd","purl":"pkg:rpm/redhat/dhcpcd","source":"RHSA-2026:54210"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:10.0.6-11.el10_2"],"introduced":["0"],"last_affected":[],"package":"dhcpcd-debuginfo","purl":"pkg:rpm/redhat/dhcpcd-debuginfo","source":"RHSA-2026:54210"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:10.0.6-11.el10_2"],"introduced":["0"],"last_affected":[],"package":"dhcpcd-debugsource","purl":"pkg:rpm/redhat/dhcpcd-debugsource","source":"RHSA-2026:54210"},{"ecosystem":"Rocky Linux:10","fixed":["0:10.0.6-11.el10_2"],"introduced":["0"],"last_affected":[],"package":"dhcpcd","purl":"pkg:rpm/rocky-linux/dhcpcd?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:54210"}],"prev":{"headline":"brace-expansion DoS via unbounded expansion length causing an out-of-memory process crash","id":"CVE-2026-14257"},"products":["Red Hat Enterprise Linux 10"],"published":"2026-07-01","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-12","vendors":["Red Hat"]},"summary":"A remote attacker can cause a denial of service in dhcpcd by sending a crafted IPv6 Router Advertisement with a zero-length option, leading to an infinite loop.","url":"https://insights.sbomify.com/CVE-2026-14258/"}