{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80785 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-80785 is an use after free vulnerability in Linux, published on 4 Sep 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-2026-80785 and fix it if it is affected.\n\nWhat it is: CVE-2026-80785 is an use after free vulnerability in Linux, published on 4 Sep 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-2026-80785 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-2026-80785/ (Markdown: https://insights.sbomify.com/CVE-2026-80785/index.md)","id":"CVE-2026-80785","markdown":"https://insights.sbomify.com/CVE-2026-80785/index.md","name":"CVE-2026-80785","record":{"aliases":["AZL-99434","BELL-CVE-2026-80785","DEBIAN-CVE-2026-80785","GHSA-9wwr-625v-fr4h","UBUNTU-CVE-2026-80785"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel's fbdev subsystem allows local attackers to execute arbitrary code or escalate privileges via concurrent sysfs access.","user_interaction":"not_required","vuln_class":"use_after_free"},"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\nfbdev: serialize mode sysfs access with lock_fb_info()\n\nshow_mode(), show_modes(), and store_mode() access fb_info-\u003emodelist\nand fb_info-\u003emode without holding lock_fb_info(). store_modes() takes\nlock_fb_info() while replacing the modelist and freeing the old one.\n\nA concurrent reader or writer can load a pointer to an old modelist\nentry before store_modes() frees it, then dereference freed memory or\nstore a stale freed pointer in fb_info-\u003emode.\n\nTake lock_fb_info() in show_mode(), show_modes(), and store_mode() to\nserialize with store_modes(). In show_mode(), copy the mode to the\nstack and format after dropping the lock. In store_mode(), split\nactivate() into a _locked variant to avoid double-locking, and hold\nthe locks for the modelist walk, mode conversion, activation, and\nfb_info-\u003emode assignment together.","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":"fbdev: serialize mode sysfs access with lock_fb_info()","id":"CVE-2026-80785","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"fbdev: Wrap user-invoked calls to fb_set_var() in helper","id":"CVE-2026-80786"},"packages":[],"prev":{"headline":"mptcp: pm: fix memory leak from alloc-during-teardown race","id":"CVE-2026-80784"},"products":["Linux"],"published":"2026-09-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-09-07","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's fbdev subsystem allows local attackers to execute arbitrary code or escalate privileges via concurrent sysfs access.","url":"https://insights.sbomify.com/CVE-2026-80785/"}