{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89622 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89622 is a high-severity use after free vulnerability in Linux, published on 11 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-2026-89622 and fix it if it is affected.\n\nWhat it is: CVE-2026-89622 is a high-severity use after free vulnerability in Linux, published on 11 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-2026-89622 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-2026-89622/ (Markdown: https://insights.sbomify.com/CVE-2026-89622/index.md)","id":"CVE-2026-89622","markdown":"https://insights.sbomify.com/CVE-2026-89622/index.md","name":"CVE-2026-89622","record":{"aliases":["AZL-100335","BELL-CVE-2026-89622","DEBIAN-CVE-2026-89622","GHSA-hmph-x79p-jwjq","UBUNTU-CVE-2026-89622"],"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 driver","requires_auth":"low_privilege","summary":"A use-after-free in the Linux kernel MCP2221 HID driver allows attackers to execute arbitrary code or escalate privileges via crafted I2C reports.","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\nHID: mcp2221: clear rxbuf after I2C/SMBus transfer completes\n\nmcp_i2c_smbus_read() stores the caller-supplied buffer pointer in\nmcp-\u003erxbuf for the duration of a transfer but never clears it when the\ntransfer finishes or times out. Once the caller frees or reuses the\nbuffer, mcp-\u003erxbuf becomes a dangling pointer. A delayed or spurious\nMCP2221_I2C_GET_DATA report can then drive mcp2221_raw_event() to\nmemcpy device data into the freed memory, causing a write\nuse-after-free.\n\nRoute all return paths through a single exit point that clears\nmcp-\u003erxbuf and mcp-\u003erxbuf_size, so that the existing !mcp-\u003erxbuf guard\nin the raw_event handler can reject any report arriving after the\ntransfer has ended.","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":"HID: mcp2221: clear rxbuf after I2C/SMBus transfer completes","id":"CVE-2026-89622","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"HID: mcp2221: stop device IO before hid_hw_stop","id":"CVE-2026-89623"},"packages":[],"prev":{"headline":"HID: mcp2221: validate report size in mcp2221_raw_event()","id":"CVE-2026-89621"},"products":["Linux"],"published":"2026-09-11","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":"2026-10-21","vendors":["Linux"]},"summary":"A use-after-free in the Linux kernel MCP2221 HID driver allows attackers to execute arbitrary code or escalate privileges via crafted I2C reports.","url":"https://insights.sbomify.com/CVE-2026-89622/"}