{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80844 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-80844 is a memory corruption vulnerability in Linux, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-80844 and fix it if it is affected.\n\nWhat it is: CVE-2026-80844 is a memory corruption vulnerability in Linux, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-80844 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2026-80844/ (Markdown: https://insights.sbomify.com/CVE-2026-80844/index.md)","id":"CVE-2026-80844","markdown":"https://insights.sbomify.com/CVE-2026-80844/index.md","name":"CVE-2026-80844","record":{"aliases":["AZL-99411","BELL-CVE-2026-80844","DEBIAN-CVE-2026-80844","GHSA-jv4j-682x-84w7","RHSA-2026:74974","UBUNTU-CVE-2026-80844"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A missing validation in the Linux kernel's AH6 implementation allows remote attackers to trigger an out-of-bounds memory access via crafted IPv6 packets.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: ah6: validate routing header segments_left\n\nAH6 rearranges routing-header addresses before computing or verifying the\nICV. ipv6_rearrange_rthdr() assumes that segments_left is not larger than\nthe number of addresses described by the routing header's hdrlen field.\n\nThat assumption does not hold for raw IPv6 HDRINCL packets. A packet with\nhdrlen equal to 2 describes one address, but can carry an arbitrary\nsegments_left value. With segments_left equal to 255, the function moves\nits address pointer 4,064 bytes backwards and passes a 4,064-byte length to\nmemmove(), resulting in an out-of-bounds access.\n\nValidate the invariant locally before modifying the routing header or\nperforming any address-pointer arithmetic, and propagate malformed-header\nerrors to the existing AH6 input and output error paths.","ecosystems":["Red Hat:enterprise_linux_nvidia:10::el10"],"exploits":{"exploitdb":0,"first_seen":"2026-09-18","github_poc":3,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-18T10:07:57Z","kind":"github_poc","ref":"https://github.com/suominen/dirtyah6","stars":0,"title":"Tracking DirtyAH6 (CVE-2026-80844), the Linux kernel IPv6 AH routing-header out-of-bounds write"},{"date":"2026-09-19T16:19:26Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-80844","stars":0,"title":"CVE-2026-80844"},{"date":"2026-09-21T02:04:54Z","kind":"github_poc","ref":"https://github.com/HORKimhab/CVE-2026-80844","stars":0,"title":"CVE-2026-80844, DirtyAH6"}],"tier":"poc_unverified"},"has_fix":true,"headline":"xfrm: ah6: validate routing header segments_left","id":"CVE-2026-80844","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":52,"n_references":9,"next":{"headline":"xfrm: avoid lock inversion in nat keepalive work","id":"CVE-2026-80845"},"packages":[{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k","purl":"pkg:rpm/redhat/kernel-64k","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-core","purl":"pkg:rpm/redhat/kernel-64k-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug","purl":"pkg:rpm/redhat/kernel-64k-debug","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-core","purl":"pkg:rpm/redhat/kernel-64k-debug-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debug-debuginfo","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel","purl":"pkg:rpm/redhat/kernel-64k-debug-devel","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-debug-devel-matched","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules","purl":"pkg:rpm/redhat/kernel-64k-debug-modules","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-core","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debug-modules-extra","purl":"pkg:rpm/redhat/kernel-64k-debug-modules-extra","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-debuginfo","purl":"pkg:rpm/redhat/kernel-64k-debuginfo","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel","purl":"pkg:rpm/redhat/kernel-64k-devel","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-devel-matched","purl":"pkg:rpm/redhat/kernel-64k-devel-matched","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules","purl":"pkg:rpm/redhat/kernel-64k-modules","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-core","purl":"pkg:rpm/redhat/kernel-64k-modules-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-64k-modules-extra","purl":"pkg:rpm/redhat/kernel-64k-modules-extra","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/redhat/kernel-abi-stablelists","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/redhat/kernel-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/redhat/kernel-debug","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/redhat/kernel-debug-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-debuginfo","purl":"pkg:rpm/redhat/kernel-debug-debuginfo","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/redhat/kernel-debug-devel","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel-matched","purl":"pkg:rpm/redhat/kernel-debug-devel-matched","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/redhat/kernel-debug-modules","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-core","purl":"pkg:rpm/redhat/kernel-debug-modules-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/redhat/kernel-debug-modules-extra","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo","purl":"pkg:rpm/redhat/kernel-debuginfo","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-aarch64","purl":"pkg:rpm/redhat/kernel-debuginfo-common-aarch64","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/redhat/kernel-devel","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-devel-matched","purl":"pkg:rpm/redhat/kernel-devel-matched","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/redhat/kernel-doc","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/redhat/kernel-modules","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-core","purl":"pkg:rpm/redhat/kernel-modules-core","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/redhat/kernel-modules-extra","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra-matched","purl":"pkg:rpm/redhat/kernel-modules-extra-matched","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-tools","purl":"pkg:rpm/redhat/kernel-tools","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-debuginfo","purl":"pkg:rpm/redhat/kernel-tools-debuginfo","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs","purl":"pkg:rpm/redhat/kernel-tools-libs","source":"RHSA-2026:74974"},{"ecosystem":"Red Hat:enterprise_linux_nvidia:10::el10","fixed":["0:6.12.0-259.28.el10nv"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs-devel","purl":"pkg:rpm/redhat/kernel-tools-libs-devel","source":"RHSA-2026:74974"}],"prev":{"headline":"xfrm: fix xfrm_state_construct() auth-trunc leak","id":"CVE-2026-80843"},"products":["Linux"],"published":"2026-09-04","related":[],"sources":[{"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":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A missing validation in the Linux kernel's AH6 implementation allows remote attackers to trigger an out-of-bounds memory access via crafted IPv6 packets.","url":"https://insights.sbomify.com/CVE-2026-80844/"}