{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-74634 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-74634 is a high-severity use after free vulnerability in Linux, published on 22 Aug 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-2026-74634 and fix it if it is affected.\n\nWhat it is: CVE-2026-74634 is a high-severity use after free vulnerability in Linux, published on 22 Aug 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-2026-74634 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-2026-74634/ (Markdown: https://insights.sbomify.com/CVE-2026-74634/index.md)","id":"CVE-2026-74634","markdown":"https://insights.sbomify.com/CVE-2026-74634/index.md","name":"CVE-2026-74634","record":{"aliases":["BELL-CVE-2026-74634","DEBIAN-CVE-2026-74634","GHSA-cq5j-7xcv-jwf8","UBUNTU-CVE-2026-74634"],"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 ring buffer allows attackers to potentially execute code or escalate privileges when resizing is disabled.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/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\nring-buffer: Prevent subbuf order change when resizing is disabled\n\nBecause ring_buffer_subbuf_order_set() frees buffer pages, we can't\nallow it when resizing is disabled. A non-consuming reader is at risk of\nuse-after-free (rb_advance_iter()).\n\nReturn -EBUSY on resize_disabled, matching ring_buffer_resize()\nbehaviour.","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":"ring-buffer: Prevent subbuf order change when resizing is disabled","id":"CVE-2026-74634","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"fbdev: bitblit: bound-check glyph index in bit_cursor()","id":"CVE-2026-74635"},"packages":[],"prev":{"headline":"tracing: Fix NULL pointer dereference in module event cache removal","id":"CVE-2026-74633"},"products":["Linux"],"published":"2026-08-22","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":"2026-08-25","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel ring buffer allows attackers to potentially execute code or escalate privileges when resizing is disabled.","url":"https://insights.sbomify.com/CVE-2026-74634/"}