{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-63958 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-63958 is a memory corruption vulnerability in Linux, published on 19 Jul 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-2026-63958 and fix it if it is affected.\n\nWhat it is: CVE-2026-63958 is a memory corruption vulnerability in Linux, published on 19 Jul 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-2026-63958 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-2026-63958/ (Markdown: https://insights.sbomify.com/CVE-2026-63958/index.md)","id":"CVE-2026-63958","markdown":"https://insights.sbomify.com/CVE-2026-63958/index.md","name":"CVE-2026-63958","record":{"aliases":["BELL-CVE-2026-63958","DEBIAN-CVE-2026-63958","GHSA-qx25-w5h5-ch8m","ROOT-OS-DEBIAN-11-CVE-2026-63958","ROOT-OS-UBUNTU-2204-CVE-2026-63958","UBUNTU-CVE-2026-63958"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel USB driver","requires_auth":"none","summary":"A malicious USB controller can trigger out-of-bounds memory access in the Linux kernel UCSI driver, potentially causing crashes or code execution.","user_interaction":"not_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: typec: ucsi: validate connector number in ucsi_connector_change()\n\nThe connector number in a UCSI CCI notification is a 7-bit field\nsupplied by the PPM.  ucsi_connector_change() uses it to index the\nucsi-\u003econnector[] array without checking it against the number of\nconnectors the PPM reported at init time, so a buggy or malicious PPM\n(EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /\nglink transports) can drive schedule_work() on memory past the end of\nthe array.\n\nReject connector numbers that are zero or exceed cap.num_connectors\nbefore dereferencing the array.","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: typec: ucsi: validate connector number in ucsi_connector_change()","id":"CVE-2026-63958","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT","id":"CVE-2026-63959"},"packages":[],"prev":{"headline":"USB: serial: safe_serial: fix memory corruption with small endpoint","id":"CVE-2026-63957"},"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":"2026-07-20","vendors":["Linux"]},"summary":"A malicious USB controller can trigger out-of-bounds memory access in the Linux kernel UCSI driver, potentially causing crashes or code execution.","url":"https://insights.sbomify.com/CVE-2026-63958/"}