{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98197 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98197 is a high-severity use after free vulnerability in Linux, published on 6 Oct 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-2026-98197 and fix it if it is affected.\n\nWhat it is: CVE-2026-98197 is a high-severity use after free vulnerability in Linux, published on 6 Oct 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-2026-98197 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-2026-98197/ (Markdown: https://insights.sbomify.com/CVE-2026-98197/index.md)","id":"CVE-2026-98197","markdown":"https://insights.sbomify.com/CVE-2026-98197/index.md","name":"CVE-2026-98197","record":{"aliases":["AZL-106203","BELL-CVE-2026-98197","DEBIAN-CVE-2026-98197","GHSA-w8gm-245m-mgrg","UBUNTU-CVE-2026-98197"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel w83791d driver allows attackers to access stale memory via sysfs files after driver unbinding.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove\n\nWhen the fan/pwm 4-5 pins are not used as GPIO, w83791d_probe()\ncreates the w83791d_group_fanpwm45 sysfs group on the I2C client\ndevice.\n\nThe probe error path removes this group when a later initialization\nstep fails, but the normal remove path only removes w83791d_group.\nAs a result, the optional fan/pwm 4-5 sysfs files can remain after the\ndriver is unbound.\n\nThe callbacks associated with these files access the driver data,\nwhich is devm allocated and released after driver unbind. Leaving the\nsysfs files behind can therefore result in accesses to stale driver\ndata.\n\nRemove w83791d_group_fanpwm45 during normal teardown as well.\n\nThis issue was found by manual code inspection.","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":"hwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove","id":"CVE-2026-98197","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"hwmon: (pwm-fan) Stop RPM timer before freeing tach data","id":"CVE-2026-98198"},"packages":[],"prev":{"headline":"wifi: brcmsmac: fix UAF in brcms_free_timer()","id":"CVE-2026-98196"},"products":["Linux"],"published":"2026-10-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel w83791d driver allows attackers to access stale memory via sysfs files after driver unbinding.","url":"https://insights.sbomify.com/CVE-2026-98197/"}