{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43468 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43468 is a medium-severity vulnerability in Linux kernel, published on 8 May 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-2026-43468 and fix it if it is affected.\n\nWhat it is: CVE-2026-43468 is a medium-severity vulnerability in Linux kernel, published on 8 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-43468 in the wild and no public exploit code.\n\nAffected product: Linux kernel. 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-2026-43468/ (Markdown: https://insights.sbomify.com/CVE-2026-43468/index.md)","id":"CVE-2026-43468","markdown":"https://insights.sbomify.com/CVE-2026-43468/index.md","name":"CVE-2026-43468","record":{"aliases":["BELL-CVE-2026-43468","DEBIAN-CVE-2026-43468","GHSA-7gc8-cffq-4r9r","ROOT-OS-UBUNTU-2404-CVE-2026-43468","UBUNTU-CVE-2026-43468"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A deadlock in the Linux kernel mlx5 driver can cause a denial of service when switching eswitch modes concurrently with VF changes.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix deadlock between devlink lock and esw-\u003ewq\n\nesw-\u003ework_queue executes esw_functions_changed_event_handler -\u003e\nesw_vfs_changed_event_handler and acquires the devlink lock.\n\n.eswitch_mode_set (acquires devlink lock in devlink_nl_pre_doit) -\u003e\nmlx5_devlink_eswitch_mode_set -\u003e mlx5_eswitch_disable_locked -\u003e\nmlx5_eswitch_event_handler_unregister -\u003e flush_workqueue deadlocks\nwhen esw_vfs_changed_event_handler executes.\n\nFix that by no longer flushing the work to avoid the deadlock, and using\na generation counter to keep track of work relevance. This avoids an old\nhandler manipulating an esw that has undergone one or more mode changes:\n- the counter is incremented in mlx5_eswitch_event_handler_unregister.\n- the counter is read and passed to the ephemeral mlx5_host_work struct.\n- the work handler takes the devlink lock and bails out if the current\n  generation is different than the one it was scheduled to operate on.\n- mlx5_eswitch_cleanup does the final draining before destroying the wq.\n\nNo longer flushing the workqueue has the side effect of maybe no longer\ncancelling pending vport_change_handler work items, but that's ok since\nthose are disabled elsewhere:\n- mlx5_eswitch_disable_locked disables the vport eq notifier.\n- mlx5_esw_vport_disable disarms the HW EQ notification and marks\n  vport-\u003eenabled under state_lock to false to prevent pending vport\n  handler from doing anything.\n- mlx5_eswitch_cleanup destroys the workqueue and makes sure all events\n  are disabled/finished.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net/mlx5: Fix deadlock between devlink lock and esw-\u003ewq","id":"CVE-2026-43468","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"xprtrdma: Decrement re_receiving on the early exit paths","id":"CVE-2026-43469"},"packages":[],"prev":{"headline":"net/mlx5: Fix crash when moving to switchdev mode","id":"CVE-2026-43467"},"products":["Linux"],"published":"2026-05-08","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A deadlock in the Linux kernel mlx5 driver can cause a denial of service when switching eswitch modes concurrently with VF changes.","url":"https://insights.sbomify.com/CVE-2026-43468/"}