{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63956 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-63956 is a memory corruption vulnerability in Linux, published on 19 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-63956 and fix it if it is affected.\n\nWhat it is: CVE-2026-63956 is a memory corruption vulnerability in Linux, published on 19 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-63956 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-2026-63956/ (Markdown: https://insights.sbomify.com/CVE-2026-63956/index.md)","id":"CVE-2026-63956","markdown":"https://insights.sbomify.com/CVE-2026-63956/index.md","name":"CVE-2026-63956","record":{"aliases":["BELL-CVE-2026-63956","DEBIAN-CVE-2026-63956","GHSA-4m78-mjgq-hq8g","ROOT-OS-UBUNTU-2204-CVE-2026-63956","UBUNTU-CVE-2026-63956"],"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 USB driver","requires_auth":"none","summary":"A malicious USB device can trigger memory corruption in the Linux kernel cypress_m8 driver, potentially leading to code execution or system crash.","user_interaction":"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\nUSB: serial: cypress_m8: fix memory corruption with small endpoint\n\nMake sure that the interrupt-out endpoint max packet size is at least\neight bytes to avoid user-controlled slab corruption or NULL-pointer\ndereference should a malicious device report a smaller size.","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":"USB: serial: cypress_m8: fix memory corruption with small endpoint","id":"CVE-2026-63956","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"USB: serial: safe_serial: fix memory corruption with small endpoint","id":"CVE-2026-63957"},"packages":[],"prev":{"headline":"mm/vmalloc: do not trigger BUG() on BH disabled context","id":"CVE-2026-63955"},"products":["Linux"],"published":"2026-07-19","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":"2026-07-19","vendors":["Linux"]},"summary":"A malicious USB device can trigger memory corruption in the Linux kernel cypress_m8 driver, potentially leading to code execution or system crash.","url":"https://insights.sbomify.com/CVE-2026-63956/"}